How do different organisms get energy/how is the energy transferred around the ecosystem?

The answers would be "can be small", "can be large", and "have nonliving parts". This is 100% correct, because I got it right on my lesson.

Answer:

The answers are:

- Can be small

- Can be large

- Have nonliving parts

Explanation:

An ecosystem is a biological system constituted by a community of living organisms and the physical environment where they are related (that is, it is composed of both living and non-living parts). It is a unit composed of interdependent organisms that share the same habitat. A biome is made up of many similar ecosystems, so an ecosystem is much smaller than a biome, although the size of the ecosystems can vary (they can be large or they can be small).

(d) by finding the absolute age of the rock

The relative age of a rock is not an exact number or age; rather it's the comparison of one rock or fossil to another to determine which one is older or younger. Scientists use carbon dating to calculate the age of a rock. Organic material from the rock is tested and that information is used to calculate the estimated age.

C) Rock layers

The Fossil Record and Geologic Time Fossils of plants and animals are present in some rocks. These fossils contribute to our understanding of geologic time and they show us the time span when and how a civilization used to live.

(c) They get a sense of the history of the area they are investigating.

Fossils scaled into rocks are fundamental to the geologic time scale. For instance rocks formed during the Proterozoic Eon may have fossils of relative simple organisms, such as bacteria, algae, and wormlike animals while Rocks formed during the Phanerozoic Eon may have fossils of complex animals and plants such as dinosaurs, mammals, and trees.  

(a)the appearance and disappearance of groups of organisms

the appearance and disappearance of groups of organisms in different geological eras of earth history shows the time span of that era. This time span can be easily determined from the fossils present on sedimentary rocks because they show the family or group of those species which were present in that particular time period.

(d)radioactive dating

Scientists use radioactivity techniques to determine the age of earth. As we know radioactive substances emit energy continuously and they have a certain half life period so calculating the half life period can show us the age of earth by comparing the half lives of different radioactive elements. For example in uranium-lead dating, for instance, the radioactive decay of uranium into lead proceeds at a reliable rate.

(c)Sedimentary

Mostly sedimentary rocks like limestone and shale are the best options in the formation of fossils. Igneous rocks are formed directly from hot lava that is why they would not be able to preserve any remnants of living organisms that fall in it during its formation.

The granite is older than the sandstone.

The principle of inclusions states that with sedimentary rocks, if inclusions  are found in a formation, then the inclusions must be older than the formation that contains them. So in simple words pieces of the older rock will be included in the younger rock therefore option B is the correct answer.

Answer: Human Activity and Natural Fluctuations

Explanation:

A. Human activity

C. Natural fluctuations

Global warming usually refers to human-induced warming of the Earth system.

Thus, the possible causes of global warming are options A and C.

Learn more:

brainly.com/question/3223175

The stimulation of the vagus nerve in the baroreceptor reflex leads to parasympathetic stimulation, which decreases heart rate and cardiac output to help lower high blood pressure and maintain vascular homeostasis.

The baroreceptor reflex is a critical component of the body's ability to maintain vascular homeostasis. When blood pressure rises too high, the baroreceptors increase their firing rate, leading to parasympathetic stimulation of the vagus nerve, which slows the heart. Conversely, when blood pressure becomes too low, the rate of baroreceptor firing decreases, prompting an increase in sympathetic stimulation and a reduction in parasympathetic tone to raise the heart rate and blood pressure.

DNA is composed of several Nucleotides. The correct option is B. Dna is composed of building blocks called Nucleotides.

Nucleotides are the monomers that compose polymers like DNA and RNA. They get attached to each other by covalent bonds.

Nucleotide are made of,

- Purines ⇒ Adenine and Guanine

- Pyrimidines ⇒Thymine and Cytosine.

- The DNA sugar group is deoxyribose

Central phosphoric atom surrounded by four oxygen atoms

Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information necessary to carry out cellular functions.

The correct option is B. Nucleotides

Dna is composed of building blocks called Nucleotides.

You can learn more about nucleotides at

https://brainly.com/question/28178584

#SPJ6

Answer:

By lowering down the activation energy.

Explanation:

Activation energy is the energy required to transform the substrate into the high energy state that is eventually converted into the product. High energy requirement in the form of activation energy does not allow the reactions to occur at a higher rate under room temperature.  

Catalysts are the substances that speed up the chemical reaction by lowering down the activation energy. The reduced energy requirement allows the reactions to occur at higher rates in presence of catalysts.  

Answer:

D

Explanation:

I just the flvs test.

When the cell excretes sodium from within, against the natural tendency of matter, it is performing active transport.

In active transport the molecules move across a membrane from the region of lower concentration to a region of higher concentration using the cellular energy for the motion against the concentration gradient.

The cell excreting sodium from within is a part of the sodium potassium pump. In sodium-potassium pump the sodium ions are transported from inside the cell to outside  actively although the concentration of sodium is higher outside the cell. The energy which is used to transport sodium from inside to outside and potassium from outside to inside both against the concentration gradient is obtained through the breakdown of the ATP molecule.

Answer:

The correct answer is: transpiration.

Explanation:

All of the options are parts of the water cycle.

The process in which plants lose their water to the atmosphere is called transpiration. Transpiration consists of the evaporation of water through pores in their leaves. Transpiration is beneficial for the plants as it assists them in photosynthesis.

Sublimation refers to the transition of water from solid state to gas state, without passing through the liquid state that is normally in between those phases.

Condensation is the change of water from a gas state to a liquid state. Condensation is followed by Precipitation, a process in which water in the liquid state falls from the skies, like when it's raining.

Prokaryotes have a cytoplasm, nucleoid, ribosomes, cell membrane, and cell wall as their essential structural components. Prokaryotes with capsules are some. Prokaryotes with flagella exist. Prokaryotes with pili exist.

The nuclear membrane is absent. A cell wall protects every prokaryotic cell. There are prokaryotes with flagella and pili.

One chromosome contains all the genetic material. They are deficient in the histone proteins, which are crucial parts of eukaryotic chromosomes.

Single-celled creatures known as prokaryotes are found in the Bacteria and Archaea domains. Organelles are absent from prokaryotic cells, they lack a nucleus, and they are much smaller than eukaryotic cells.

Therefore, Bill says all cells have a nucleus, but we know that some cells, like prokaryotic cells, have no nucleus.

Learn more about prokaryotic cells here:

https://brainly.com/question/14827883

#SPJ5

Final answer:

DNA can duplicate itself through a process called replication, which is essential before cell division. Each strand of the DNA double helix acts as a template for new DNA strands, ensuring genetic continuity in daughter cells via mitosis or meiosis.

Explanation:

A unique feature of DNA is that it can duplicate itself through a process called replication. During the cell division, the genetic material has to be copied so that new cells contain the full set of chromosomes. This is achieved by the complementary base pairing of the DNA's double helix structure. As the two strands of the helix are separated, each serves as a template for creating a new complementary chain, ensuring that each daughter cell has an identical set of DNA.

The mechanism of DNA replication is crucial for both asexual reproduction through processes like mitosis and sexual reproduction involving meiosis. In mitosis, an exact replica of the cell's DNA is created, allowing for growth and tissue repair. In meiosis, DNA replication precedes the formation of germ cells with a haploid genome. The precise duplication of DNA ensures the continuity of genetic information from parent to offspring.

OPTION A, B, C.

The benefits of herding as opposed to cooperative hunting include efficient foraging, increased protection, and division of labor among the herd members, all of which contribute to survival and sustenance of the group.

In contrast to cooperative hunting, there are distinct benefits for animals living in herding societies. The key benefits of herding include foraging, protection, and division of labor.

Foraging becomes more efficient in herds. Animals can cover larger areas and gather food resources more swiftly and with reduced risks. This gathering of food resource is often guided by the herding society's knowledge about their environment, vegetation, and water sources.  

The protection element is a crucial advantage of herd living. Members of a herd can look out for one another and provide greater defense against predators. This is especially notable in 'clumped' population distributions, where the safety of individuals is improved within the group structure.

Last but not least, division of labor is another crucial benefit. Tasks within the herd can be distributed among different members, creating a more balanced and efficient system. This includes aspects like taking care of young ones, sourcing food, or even roles in herd defense.

https://brainly.com/question/19671092

#SPJ2

Answer:

Plants are the multicellular organism which are formed of eukaryotic cells.

Since plants are made of eukaryotic cells they show many differences and few similarities with the primitive prokaryotic cells.

Differences

               Feature                   Prokaryotes                  Plants

               Nucleus                     Absent                         Present

              Chromosomes         one but not true         More than one

               Lysosomes               Absent                       Present

               peroxisomes             Absent                        Present

              Microtubules            Absent                       Present

Endoplasmic reticulum          Absent                        Present

              Mitochondria             Absent                       Present  

             Cytoskeleton            Absent                       Present

       Type of  Ribosomes     70S                           80S

          Golgi apparatus        Absent                       Present

            Chloroplasts           Absent                         Present

Similarities

           Genetic material         Present                     Present  

            Vacuoles                     Present                     Present

           Vesicles                       Present                   Present

          Cell wall                       Present                    Present

         Ribosomes                   Present                    Present

        Cell membrane             Present                    Present

A device in which a chain reaction is initiated and controlled with the purpose of producing electrical power is called a nuclear reactor.

A nuclear reactor is a device that is created to control a chain reaction in order to produce a steady flow of neutrons created by the fission of heavy nuclei. Nuclear reactors are differentiated by their uses into research reactors and power reactors. The research reactors are used for conducting basic research and to produce medical isotopes for cancer treatment and imaging, while power reactors are mainly used for generating electricity.

Answer:

Pollen grains

Explanation:

Pollen grains are male sporophytes

The one that is considered to be a type of leukocyte and that has the ability of digesting antigen and antibody complexes is the eosinophils. When present, this indicates that there is a presence of infection or cancer and even allergic reaction.

Answer:

neutron

Explanation:

Before the discovery of neutron by Chawick, Thomson discovered the atom and in later researches he also discovered the electron as negatively charged particle residing outside the nucleus of any atom but he could not find neutron by then.

Later on with the discovery of isotopes, Chadwick also proposed the discovery of neutron and he explained that isotopes of same element consists of same electron and proton number but have varying neutron number.

The three ways or approaches that one can do to slow down extinction or in a way to preserve biodiversity are the following;

-          Breeding endangered species that may preserve and multiply their species

-          Protecting the endangered species in a way that they should not be held captive, be sold or kill for materialistic goods or food products

-          Prevention of using animal testing in factories and companies