SOMEONE HELP ME PLEASEEEE!!!!!!!

Answer:

A marine biologist study organisms from minute phytoplanktons to huge and gigantic blue whale. A marine ecosystem contains thousands of species of organisms that are study topic of a marine biologist.

Marine biologists study the interaction of these species with their environment. The non-living things that scientific study is about the effect of change in temperature, pH, oxygen quantity, light, acidity, salinity on marine species.

Some questions that biologist ask about living things they study are :

- how many marine species are in the endangered list?

- what is the role of a species in its ecosystem?

-how the extinction of a species affects the food chain in the ecosystem?

Species B is the most similar to the original moth due to its lack of differences in DNA. We know that 12, 14, and 28 are all greater than 3 (and represent the amount of genetic differences), which makes B the only one with a high quantity of similarities.

I hope I helped!

Species B is the most similar to the original moth species and is denoted as option B.

This is known as deoxyribonucleic acid and contains the genetic components of an organism.

The lack of differences in DNA is what makes species B the only one with a high quantity of similarities.

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Answer:

Cytokinins promote cell division and are produced in growing areas of plants.

ethylene is a gas that is produced by ripening fruits.

the answer is TRUE

Answer:

A

Explanation:

Im not 10p%sure but the chloroplast should be correct

Internal gestation and live birth in animals are evolutionary developments likely driven by the need to reproduce in dry terrestrial environments where eggs could dry out and by the threat of predators who pose significant risks to eggs. These strategies could ensure survival of offspring by preserving a moist environment and offering protection against predators.

Internal gestation followed by live birth is an evolutionary development that likely occurred for several reasons. The most compelling of these can be seen in options A and D from your question, i.e., the need to reproduce on dry land where eggs could potentially dry out and the defense against predators who pose a threat to laid eggs.

Option A addresses the environmental constraints encountered by land-dwelling species. Eggs, when left exposed, could rapidly lose moisture and become inviable in dry terrestrial environments. Accordingly, a strategy of internal gestation could help in preserving a moist environment for the developing embryo, leading to the evolution of live birth.

Option D pertains to predation pressure. Eggs, whether in water or on land, are highly vulnerable to predators. Thus, keeping the young ones inside the body until they are sufficiently developed could be a defensive strategy against predation.

Although factors mentioned in options B and C (absorption of harmful molecules and inefficient nutrient acquisition) might have played a role too, A and D seem to be the stronger drives evolutionary-wise.

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The evolutionary development of internal gestation and live birth is most likely driven by a combination of factors, including the threat of predation, the need to reproduce in harsh environments, and to shield developing embryos from harmful substances.

The evolution of internal gestation followed by live birth is most commonly understood within the context of predation and harsh environmental conditions. Both A and D options suggest plausible causes. The evolution of internal gestation can be seen, in part, as a strategy to give the embryo a safer environment that is shielded from predators and environment risks (drying out, for instance). Furthermore, in adverse conditions, eggs could absorb harmful substances from surroundings. The mutually exclusive nature of these answers suggests that the particular evolutionary route may have been influenced by a combination of factors.

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Final answer:

Damage to the plant's meristems, specifically the roots, is likely the cause of its inability to grow and produce new root cells. The roots are key for absorbing water and nutrients, and when they are damaged, the plant may not be able to survive due to restricted resource uptake.

Explanation:

When a plant can no longer grow or produce new root cells, it is likely that the meristems, particularly the root meristems or root apical meristems, suffered damage during the natural disaster. Meristems are regions in the plant where cells are capable of dividing and differentiating into various types of plant cells. If root meristems are damaged, the plant cannot produce new root tissue, which affects its ability to absorb water and nutrients from the soil. This can lead to the entire or major portion of the plant dying because the roots are essential for plant survival, anchoring the plant in the soil and facilitating the uptake of vital resources.

Generally, damage to the roots can come from various factors such as extreme temperatures, physical trauma, or chemical exposure. Cold damage to the root system, for example, can blacken or spongify roots and prevent new growth, which becomes evident by restricted water and nutrient uptake, leading to symptoms such as defoliation or small leaf size.

Answer:

C

Explanation:

The Earth's tilted axis is the primary reason for unequal heating of the atmosphere by the sun. This tilt causes different amounts of sunlight to reach different latitudes throughout the year, leading to seasonal variation in climate.

The primary factor that causes the atmosphere to be unequally heated by the sun is the tilt of the Earth's axis. This tilt, amounting to roughly 23.5 degrees relative to its orbit around the Sun, creates different zones of climate on the planet by causing differing amounts of sunlight (and hence, heat) to reach different latitudes throughout the year.

When the Earth's axis tilts towards the Sun, it's summer for that pole, and winter when it tilts away. This is the reason for seasonal variation in climate. Factors like the jet stream, local winds, and El Niño can further modify local weather conditions, but the unequal heating is primarily due to the Earth's tilted axis.

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Answer: b genus

Example: homo sapiens and homo neanderthalus. diffrent species same genus

Final answer:

A group of closely related organisms that share similar characteristics is known as a species. This classification is based on the capability of organisms to exchange genes, interbreed, and produce fertile offspring, indicating significant genetic similarity and morphological traits in common. Taxonomy classifies these organisms into hierarchical categories, with species being the most specific.

Explanation:

A group of organisms that are closely related and share similar characteristics is known as a species. Members of a species are capable of exchanging genes or interbreeding and they produce viable, fertile offspring. These organisms share significant genetic similarities, and their classification within this group suggests they can generate fertile progeny with each other and have an adequate number of morphological traits in common.

When it comes to taxonomy, organisms that are a part of the same clade have evolved from a shared ancestor. This indicates a close evolutionary relationship, and clades are groups of organisms that are classified together based on this concept in phylogenetic classification systems.

Moreover, one of the strongest arguments supporting that two organisms, A and B, are closely related evolutionarily is if the DNA sequences of A and B are highly homologous. This genetic homology points to a common ancestry and shared evolutionary paths.

In the context of taxonomy, the taxonomic classification system uses a hierarchical model to organize living organisms, where each sublevel indicates that the organisms are more similar to each other. The broadest category in this system is the domain, which is then followed by more specific categories such as kingdom, phylum, class, order, family, genus, and ends with species being the most specific.

Answer:

- Surgery

- Chemotherapy

- Radiation Therapy

- Immunotherapy

- Targeted Therapy

- Hormone Therapy

However some people may have no treatments, depending on the cancer.

Explanation:

Please mark brainliest and have a great day!

Answer: Option D

Explanation:

The fat which is found inside the body helps in providing insulation to the body form the outer environment. It also serves many important functions in the body such as protection from cold by providing heat to the body.

The fat is also found in the myelin sheath of the neurons. This helps in saving the energy which is transmitted from one neurons to another neuron.

It provides a long route for signal transmission without wasting energy by providing insulation.

Hence, the correct answer is option D

Fats are essential in the human diet as they help in the formation of the insulating layer around nerve cells, promoting efficient transmission of signals across neurons.

It is vital for humans to consume fats in moderation because they play fundamental roles in the body. The correct answer to the question is option D: Fat helps nerves transmit signals. This is because fats participate in forming the myelin sheath, a fatty insulating layer protecting our neurons (nerve cells) and aiding in the swift and efficient transmission of signals in our nervous system. Without enough fat in our diet to facilitate this, our neurological health might be compromised.

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Hello. This question is incomplete. The full question is:

"Identify the product of genetic engineering. :

inserting a spider’s silk gene in a goat’s DNA to weave silk threads

choosing livestock for mating to pass on their genes for being large to offspring

intentionally pollinating two strawberry plants that produced sweet berries

fishing for large fish, leaving small fish to pass on their genes to offspring"

Answer:

inserting a spiders silk gene in a goats DNA to weave silk threads

Explanation:

Genetic engineering is the branch of science that manages to gather several techniques for the purpose of manipulating the genes of any organism from artificial experiments. This manipulation process causes such elements to be duplicated, transferred or even isolated from the original genes. With this, the objective is to produce beings with improved genetics to improve functions or even produce some substances that can bring benefits to man. An example of the use of genetic engineering occurs when a scientist wants to insert a spider's silk gene into a goat's DNA to weave silk threads

Genetic engineering involves altering an organism's genotype to achieve desirable traits, such as creating Roundup-ready soybeans and human insulin through genetic modification.

Genetic engineering involves the alteration of an organism's genotype using recombinant DNA technology to achieve desirable traits. One key product of genetic engineering is the creation of Roundup-ready soybeans, which are genetically modified to be resistant to the herbicide Roundup. Another important product is human insulin, which is biosynthesized by genetically engineered microorganisms.

Answer:i think its answer C

Explanation:

Answer:

Hypothesize that the ants are following a scent trail that the first ant left.

Explanation:

The scientific method can be defined as the manner or set of ground rules employed in a scientific investigation in order to obtain the most reliable results as possible. However, the scientific method is somewhat more subjective, or implicit, in the scientific way of thinking than a manual with explicit rules about how the scientist or another should act.

Generally, the scientific method includes some steps such as observation, hypothesis formulation, experimentation, interpretation of results and, finally, conclusion. The student, exposed in the question, already made the observation, when he realized that ants do exactly the same track as an ant did before; The next step in the scientific method this student must do is to create a hypothesis. This student's hypothesis should ask whether ants are following a scent trail the first ant left.

Answer:

B. Deposition Gain

Explanation:

antiacids- acid in stomach

anticoagulants- reduces blood clots

antiemetics- prevent vomiting

Answer:

C. Tap root system

Explanation:

The taproot is the primary root that is derived from the radicle directly. This primary root has many lateral roots originating from it. Root vegetables such as carrots are classified as tap roots.

These root vegetables are fleshy in nature. The taproot of carrot is modified to store the food. Storage of food makes the tap roots of these vegetable swollen in appearance. Another example of root vegetable is turnip which is also a taproot.

Answer:

Tap root

Explanation:

Penn foster

Answer:

Feeding, reproduction, respiration and excretion.

Characteristic features of Flea, Bacteria and Elm tree

Flea:

1. Flea is small and wingless insects.

2. It survives as parasite on the body of mammals and animals.

3. It acts as carriers of many disease.

4. It gets its nourishment from the blood.

Bacteria:

1. It is a single celled prokaryotic organism.

2. It is both harmful as well as beneficial to the other living organism.

3. It is a member of decomposer.

4. They are microscopic in appearance.

Elm tree:

1. It is a deciduous tree.

2. It is life span is approximately 300 years.

3. It is native to central Asia.

4. It act as source of food for various living organisms.

Answer:

B. Genes produce proteins that cause traits

Explanation:

A P E X

Answer:

Red blood cell production

Explanation:

Marrow makes blood and it is then sent to heart and lungs to be filled with oxygen

Answer:

GGAUC

Explanation:

C pairs with G

T pairs with A

A pairs with U

G pairs with C

CCTAG -> GGAUC

Answer:

B. The occipital lobe

Explanation:

The brain receives signal or information for vision through one of the five senses, the eyes. The brain processes the visual information in the occipital lobes of the cerebrum. The occipital lobes are one of the four main lobes of the cerebral cortex. The eyes transmit this information to the visual cortex. The visual cortex takes processes the information so, we are able to see the things.

Answer:

B

Explanation:

Answer:

C. cAMP receives a message from a nonsteroid hormone and carries the message into the cell.

Explanation:

Water soluble hormones, the non-steroid hormones bind to their cell surface receptors to activate the G protein. The activated G protein activates adenylyl cyclase which in turn leads to the formation of cAMP from ATP. The cAMP activates protein kinases which in turn phosphorylates the cytoplasmic proteins. The activates cytoplasmic proteins bring about the desired response.

In this way, the cAMP second messenger system delivers the information from hormones to the cell via cAMP.  

Answer:

comparatively cooler

Explanation:

The land areas and water bodies get heated during the summer due to the increasing amount of incoming solar radiation. The water bodies like oceans, seas, and rivers take more time to heat as they can reflect some amount of radiation back to the atmosphere and also it takes a lot of time to cool.

In the case of areas near a lake and away from the lake, the areas near the lake will be comparatively cooler than the areas that are away from the lake. It is because the water in the lake is quite less in comparison to the ocean bodies, so the water will be heated at a faster rate and it will reflect some amount of light also, thereby the places will be cold less warm.

But away from the lake, the areas will absorb more heat as it cannot reflect the solar radiation back into the atmosphere. So these places will be warmer.

Hence, the areas near the lake will be cooler than the areas away from the lake.

Answer:

6 CO2 + 6 H2O → C6H12O6 + 6 O2

Explanation:

Answer:

The answer is: 6 CO2 + 6 H2O → C6H12O6 + 6 O2

Explanation:

Photosynthesis is the process in which the energy of light is converted into chemical energy in the form of sugars. In a process driven by the energy of light, glucose molecules (and other sugars) are created from water and carbon dioxide, while oxygen is released as a byproduct.

                              Light

6 CO2 + 6 H2O -------------- → C6H12O6 + 6 O2

                           Nutrients         (Sugars)

The answer is: 6 CO2 + 6 H2O → C6H12O6 + 6 O2

Answer:

in the same direction as the wind blows

Explanation:

The dunes are hills formed by grains of sand held together by the action of wind or water. Over time, as sand dunes tend to migrate in the same direction as the wind blows.

They have a larger side that is eroded (windward) and a smaller, steeper side (leeward) where deposition of eroded material occurs. Through this mechanism of erosion and deposition the dunes are considered highly dynamic, "moving" over time.

Answer:

Chloroplasts

Explanation:

Chloroplasts are the double membrane-bound organelles that are mostly present in leaves of the plants. Chloroplasts have chlorophyll pigments in their thylakoid membranes and enzymes for the Calvin cycle in the stroma.

Presence of chlorophyll pigment allows the Chloroplasts to serves as a site for photosynthesis as these pigments trap the sunlight required for the process.  

Photosynthesis primarily takes place in the chloroplasts within the mesophyll layer of leaves, where the pigment chlorophyll in thylakoid structures captures light energy. Gaseous exchange required for photosynthesis is regulated by stomata and guard cells on the leaf surface.

The site of photosynthesis within a plant is the chloroplast, which is primarily located in the mesophyll layer of leaves. These chloroplasts contain disc-shaped structures known as thylakoids, which are grouped into stacks called grana. The thylakoids house the green pigment chlorophyll, which is essential for capturing light energy during the process of photosynthesis. Other plant parts like stems can also be photosynthetic, but the bulk of photosynthesis tends to occur in the leaves due to their specialized structure that facilitates water and air movement.

Gaseous exchange, important for the photosynthetic process, occurs through the stomata (singular: stoma) found mainly on the underside of the leaf. Each stoma is accompanied by guard cells, which regulate the opening and closing to balance gas exchange and water loss. This regulation is crucial to maintain homeostasis within the plant while it carries out photosynthesis.

Answer:

A. Lightning

Explanation:

Nitrogen is very fundamental for a wide range of life activities in both plant and animals.

Lightning which accompanies thunder during rain storm and other weather phenomenon aids the release of atmospheric nitrogen for life processes. The energy that accompanies a lightning event is mostly electrical in nature. This electrical energy is huge and very massive. As the lightning interacts with free nitrogen molecules in the atmosphere, the molecule is broken down. The free nitrogen which results then combines with oxygen in the atmossphere to form oxides of nitrogen. When oxides of non-metals dissolves in rain water, they make the water rich in nitric acid and can be brought to the biosphere for use by plant and animals.

A. Plugging in the electrical cord with dry hands

C. Checking the glass slides and cover slips for chips prior to making a wet mount

D. Switching to high power after focusing under low power

E. Carrying the microscope with both hands

A. Plugging in the electrical cord with dry hands to avoid electric shock.

A laboratory poses potential risks due to exposure to corrosive and toxic materials, flammable solvents, high pressure gases, explosive chemicals and dangerous microbes. A little care and adherence to prescribed safety guidelines will help avoid laboratory mishaps.

C. Checking the glass slides and cover slips for chips prior to making a wet mount to view clear structures.

D. Switching to high power after focusing under low power in the microscope for better reading.

E. Carrying the microscope with both hands which avoid breakage.

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Answer:

D

Explanation:

Just remember immigration the i= into

emigration the e=exit

Hope this helps??

Answer:

It is: D.  it produces male and female sex cells.

Explanation:

Answer:

D. it produces male and female sex cells

Explanation:

Hope this helps!

Answer:

The double-helix structure of DNA: Watson, Crick, Franklin

The chemical composition of proteins: Mulder  

The monomer of nucleic acids: Levene