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Elena L [17]
3 years ago
15

Look at the ocean system described below.

Biology
2 answers:
fenix001 [56]3 years ago
7 0

Answer:

its B hope this helps

Explanation:

its B because i said so!

Gelneren [198K]3 years ago
7 0

Answer:

D. The mackerel population will increase.

Explanation:

According to the ocean's system described, the tuna population eats mackerel, mackerel population eats shrimp, and shrimp population eats plankton. Thus, if humans kill the tuna, it will affect the complete food chain drastically. But the first effect would be seen on the direct prey whose population will increase significantly. This is because of no or less availability of the predator. Thus, according to the given conditions and possible statements, the mackerel population will increase after the tuna are killed by humans.

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Which natural selection condition example can be classified as over production of offspring?
Tatiana [17]
Natural selection is the process by which individuals with characteristics that are advantageous for reproduction in a specific environment leave more offspring in the next generation, thereby increasing the proportion of their genes in the population gene pool over time. Natural selection is the principal mechanism of evolutionary change, and is the most important idea in all biology. Natural selection, the unifying concept of life, was first proposed by Charles Darwin, and represents his single greatest contribution to science.

Natural selection occurs in any reproducing population faced with a changing or variable environment. The environment includes not only physical factors such as climate or terrain, but also living factors such as predators, prey, and other members of a population.

Mechanism of Natural Selection

The mechanism of natural selection depends on several phenomena:

• Heredity: Offspring inherit their traits from their parents, in the form of genes.

• Heritable individual variation: Members of a population have slight differences among them, whether in height, eyesight acuity, beak shape, rate of egg production, or other traits that may affect survival and reproduction. If a trait has a genetic basis, it can be passed on to offspring.

• Overproduction of offspring: In any given generation, populations tend to create more progeny than can survive to reproductive age.

• Competition for resources: Because of excess population, individuals must compete for food, nesting sites, mates, or other resources that affect their ability to successfully reproduce.

Given all these factors, natural selection unavoidably occurs. Those members of a population that reproduce the most will, by definition, leave more offspring for the next generation. These offspring inherit their parents' traits, and are therefore also likely to succeed in competition for resources (assuming the environment continues to pose the same challenges as those faced by parents). Over several generations, the proportion of offspring in a population that are descended from the successful ancestor



Uloborid spider eggs and spiderlings. In any given generation, populations tend to create more offspring than can survive to reproductive age.

increases, and traits that made the ancestor successful therefore also increase in frequency. Natural selection leads to adaptation, in which an organism's traits conform to the environment's conditions for existence.

5 0
2 years ago
Did unicellular or multicellular life appear first ?
Fiesta28 [93]

Answer:

unicellular life first

Explanation:

it arose billions of years ago while multicellular life forms around at least 600 million years ago

8 0
2 years ago
florida panthers have had to adapt to a changing environment. how did this almost cause the extinction of the species?
dusya [7]
They had to change they way they live which is quite difficult it is like you going to a new school in a new state and not being used to anyone
5 0
2 years ago
Which of the following does natural selection act directly upon? Alleles, genes, individual organisms, or mutations?
Inga [223]

Natural selection act directly upon <u>Alleles</u>

Explanation:

Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.

6 0
3 years ago
When a flowers pollen meets its seed it's called a what???<br><br> I need a word
Snezhnost [94]
Germination I think that it’s
5 0
3 years ago
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