A is the periodic rise and fall of the water level in the oceans and other large bodies of water

Explanation: The green algae population will increase because if the crustaceans are killed, there is no consumption of algae hence resulting in increased levels of algae.

After that the blue gill fish that is the consumer of crustaceans will also be affected, their numbers will start to reduce with time and they might die off unless they move to another habitat so the option "D" is wrong

Final answer:

The most likely change in the pond if crustaceans are killed is that the c) green algae population will probably increase due to a reduction in consumption by primary consumers.

Explanation:

If the crustaceans in a pond ecosystem are killed with pesticides, we can expect several changes to occur within the food web. Crustaceans serve as the primary consumers, which are a vital food source for the secondary consumers (e.g., bluegill fish). Without crustaceans, bluegill fish will likely have less food available, leading to a decline in their population. This decline in bluegill will reduce predation pressure on the green algae, the primary producers, potentially leading to their population increase. It is not expected that the crustacean population can eat something else because they are being killed off. Similarly, it is unlikely that the small mouth bass (tertiary consumer) population will increase since their food sources (bluegill and crustaceans) are being removed or reduced. Therefore, the most likely scenario is that the green algae population will increase.

Answer:

Algae

Explanation:

Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis. Certain algae are familiar to most people; for instance, seaweeds (such as kelp or phytoplankton), or the algal blooms in lakes. Single-celled algae can live on moist land.

"The correct term for plant-like organisms that grow in or near water is ""aquatic plants"" or ""hydrophytes."" These organisms are specifically adapted to live submerged in water, or at the water's surface.

Aquatic plants can be further classified based on their habitat:

 1. Emergent plants are rooted in the bottom of the water body but have stems, leaves, and flowers that extend above the water's surface. Examples include cattails (Typha spp.) and bulrushes (Schoenoplectus spp.).

2. Floating-leaved plants are rooted in the bottom with leaves that float on the water's surface. An example is the water lily (Nymphaea spp.).

3. Submerged plants are completely underwater, except for when they flower. They are often referred to as ""oxygenating plants"" because they release oxygen into the water during photosynthesis, which is crucial for the health of aquatic ecosystems. Examples include hydrilla (Hydrilla verticillata) and eelgrass (Zostera marina).

 4. Floating plants are not attached to the bottom; they float freely on the surface of the water. Examples include duckweeds (Lemnaceae) and water hyacinth (Eichhornia crassipes).

Answer:

Reverse transcriptase

DNA polymerase

DNA ligase

Explanation:

cDNA library consists of cloned cDNA (complementary DNA) inserted into a host. cDNA is produced from the mature mRNA (transcriptome form the nucleus) via reverse transcriptase (synthesize single stranded DNA from RNA). Single stranded cDNA is converted into a double stranded DNA thanks to DNA polymerase.  Restriction endonucleases and DNA ligase are enzymes necessary for the cloning process ( for cloning the sequences into host-bacterial plasmids).

A cDNA library is constructed using reverse transcriptase, primary mRNA transcripts, and DNA ligase. These tools help to create a library of DNA from the expressed genes in a cell.

The construction of a cDNA library typically employs the use of reverse transcriptase, primary mRNA transcripts, and DNA ligase. The process starts with messenger RNA (mRNA) in the cell, which is used as a template by the enzyme reverse transcriptase to make complementary DNA, or cDNA. This cDNA can then serve as a template for DNA polymerase to create double-stranded DNA copies. These fragments are eventually joined together using DNA ligase, either into plasmid vectors or bacteriophage, to generate a cDNA library. This library only contains DNA from the expressed genes in the cell, excluding sequences such as introns and promoters, which are not translated into proteins.

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Answer:

1) carbon dioxide enters a plant and is used to make sugar; which is used to build plant tissue.

2) a primary consumer eats the plant. the plant's carbon enters the primary consumer.

3) carbon enters a high-level consumer when it eats the primary consumer. Some carbon exits as feces

4) fungi use the carbon that is found in the wolf's feces.

5) cellular respiration in fungi releases carbon dioxide to the atmosphere.

Explanation:

The above ilustration described a food chain involving the flow of carbon in the carbon cycle.

1) A food chain always begins with a PRODUCER e.g plants which undergoes photosynthesis to make its food (glucose sugar). Carbon in form of carbondioxide (CO2), which enters through the stomata of the plant is used in the photosynthetic process. Hence, photosynthesis removes carbon from the atmosphere.

2) An organism in the next TROPHIC LEVEL of the food chain called PRIMARY CONSUMER feeds on the plants. This causes the stored carbon in the plant to be transferred to the animal (primary consumer).

3) Another consumer higher than the primary consumer i.e. secondary and tertiary consumers eat the primary consumer, causing the carbon to be transferred to it. Some of this carbon is later released as feaces (undigested).

4) A set of organisms called DECOMPOSERS in ecology, which is the fungi in this case

begins to use the carbon source in the feaces as nutrients in order to grow.

5) Finally, the fungi undergoes cellular respiration which releases the carbon in form of carbondioxide (CO2) back into the atmosphere.

Carbon moves through organisms as it is taken in by plants and used to build tissue, then passed on to primary consumers, and eventually to high-level consumers. Fungi play a role in decomposing waste and releasing carbon back into the atmosphere through respiration.

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Answer:

Cartilage rings of trachea have protective role

Explanation:

Trachea is a tube, part of the respiratory system, which allows the passage of the air: from larynx to lungs (primary bronchi). It is enveloped with cartilage rings that prevent collapse of the trachea when there is no air. The cartilage "rings" are C-shaped, except one full ring-shaped - the cricoid cartilage which attaches trachea to the larynx.

One might suffer from a cardiovascular disease due to high cholesterol from consuming too much butter, or rather too much dairy and fat in general.

In eukaryotes, two types of cell division occurs that divides the genetic material into daughter cells.

The correct answer is option C. daughter cells that are identical to the parent cell.

other options-

A. two stages of cell division- incorrect, Mitosis involves one cell division.

B. replication of cellular genetic material-incorrect, DNA replication occurs in both mitosis and meiosis.

D. four daughter cells that are produced from each parent cell- incorrect. In mitosis two daughter cells are produced from each parent cell.

Learn more about mitosis-

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Daughter cells that are identical to the parent cell [Option C] describes and event that results from mitosis but not meiosis

Mitosis and meiosis are both important processes involved in cellular reproduction, but they have distinct differences. One notable difference is that mitosis results in daughter cells that are identical to the parent cell, whereas meiosis results in genetically distinct daughter cells.

Answer:

4568

Explanation:

The latest update on the number of critically endangered species is from the year of 2014, thus five years ago. As of this year, there have been 4568 species that have been placed in this category, 2464 of which are animal species, and 2104 are plant species. In order for a species of plant or animal to be placed in this category it needs to be on the verge of dying out in the wild because it has only very small number of individuals left in the wild that can produce the new generations. Unfortunately, the number of the critically endangered species has constantly been on the rise, and in the most recent history the blame for that falls on the humans and their activities. Some species that fall into this category are the Chinese alligator, Sumatran rhinoceros, eastern gorilla, vaquita, Iberian lynx...

There were around 61,000 species on the IUCN Red List in 2011, which includes species from 'Least Concern' to 'Critically Endangered'. Species are listed as critically endangered due to various factors, including habitat loss, overhunting, and significant population declines. For current data, the most recent version of the IUCN Red List should be referred to.

The exact number of critically endangered species varies as new species are discovered and status of existing ones keep changing due to various factors. However, for example, in 2011, there were around 61,000 species listed on the IUCN Red List which is maintained by the non-profit IUCN. This list includes species in categories from ‘Least Concern’ to ‘Critically Endangered’, and each classification has different criteria based on taxonomy, the type of threat, and other elements.

It's crucial to understand that species are classified as critically endangered because of reasons like habitat loss, overhunting, overfishing, and drastic population declines. Some examples of critically endangered vertebrate species include the Siberian tiger, the mountain gorilla, and the harpy eagle. The harpy eagle, for instance, is considered 'near threatened' globally, but critically endangered in much of its former range in Mexico and Central America.

The IUCN Red List serves as a crucial resource for scientists and conservationists aiming to preserve biodiversity and is supported by various scientific research. To get accurate information about the current number and names of critically endangered species, you would need to refer to the most recent version of the IUCN Red List.

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Answer:

C

Explanation:

Nitrogen is fixed in the soil from the atmosphere, in a process called nitrification, by nitrogen-fixing bacteria or on a rare occasion, by lightning strikes. The nitrogen is fixed as, ammonia, nitrites, and nitrates. These nitrogen-based compounds are then taken up by plants and used to make nitrogen-based bio-molecules such as amino acids and nucleic acids. When plants are consumed by primary consumers, these compounds are transferred up  in the food chain.

Answer:

C. Nitrogen cycle

Explanation:

1) Eating leaves

2) Being food for birds

Answer:

In certain group of trees, caterpillar create leaf ties that attract a group on insects that feed on those tied leaves thereby changing the ecosystem. There is a latest article in this topic in journal called Ecology.

Explanation:

i am most likely sure it’s true

C. Delirium

He is getting surgery for his hip and was medicated. The medicine made him delirious, that why it only why he was in the hospital

The most likely diagnosis for Jed, taking into account his symptoms and recent hospitalization, is delirium. This condition often appears during or after hospital stays, especially tied to particular medical conditions or treatments.

In this case, the diagnosis that most aligns with Jed's symptoms, such as confusion about time or day and lack of focus that started after hospitalization for surgery, is delirium. This condition is usually temporary and often occurs during or after hospitalization, particularly in conjunction with certain medical conditions or treatments. It is much less likely at Jed's age to be Alzheimer's, Parkinson's or dementia, as these conditions tend to primarily affect older people.

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Answer:

The complete set of an organism's or population's genes. B. genome

A variation at a single position in a DNA sequence among individuals of the same species. F. single nucleotide polymorphism (SNP)

A lab instrument used to precisely measure and move small amounts of liquid. E. micropipette

A procedure that makes thousands of copies from a small sample of DNA. J. polymerase chain reaction (PCR)

A word that means to copy. I. amplify

An enzyme that copies a single strand of DNA. A. DNA polymerase  

A single, short piece of DNA that must be present to copy a DNA template. D. primer  

Viruses that infect bacteria. C. bacteriophages  

Short enzymes that cut DNA samples at a specific base sequence. H. restriction endonucleases (restriction enzymes).

A process that separates pieces of DNA by their size using an electrical current. K. gel electrophoresis

A series of chemical reactions that generate a cellular response. L. signal transduction

A molecule that binds to another molecule. G. ligand  

Explanation:

Genome is also defined as a full set of genetic material in an organism.

SNP is usually referred to a substitution of a single nucleotide at a specific position in the DNA.

Micropipette is used for the precise measurement and for the exact amount of liquid delivery.

PCR is a widely used technique in molecular biology, used for the amplification (replication) of DNA fragments. It is performed thanks to heat-resistant enzyme (Taq polymerase) through the cyclic reactions. Polymerases are enzymes that add nucleotides in order to make chanis-polymers of nucleic acid (polymerization) and they require short DNA segment (primer) in order to start the polymerization. Restriction enzymes are enzymes that recognize and cut DNA at specific site (restriction site) and are widely used in DNA cloning.

Signal transduction is a set of steps from signal binding to cell response that are transmitted through the cell. It usually starts with ligand-receptor binding.

Answer:

D. full lips

Explanation:

Answer:

she would probably have B and D