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Nostrana [21]
3 years ago
15

Which statement best describes how light travels?

Biology
2 answers:
Effectus [21]3 years ago
6 0
I believe it's the first one. 
xeze [42]3 years ago
4 0

The first one is the answer

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To which trophic level do elk belong?
hodyreva [135]


C: primary Consumer

<em>primary consumers</em> are typically animals that eat plants aka herbivores.

<em>producers </em>would be plants

<em>secondary consumers </em>are typically ones that eat meat or eat meat and plants aka omnivores.

 <em>decomposers, </em>I believe are like your fungus or anything that feeds off of dead organisms or eat the waste of that organism.

Hopefully this helped. I  remember learning about this in college.  



7 0
3 years ago
How does gene flow directly contribute to evolution? I'll mark brainliest
kifflom [539]

Answer:

The correct answer is - B. It introduces new alleles into a population.

Explanation:

Gebe flow or migration is the transfer of the genetic material or transfer of genes from one population to another population of the same species. Gene flow is also responsible for the genetic change that leads to evolution.

Gene flow can contribute in various ways such as migration or vertical gene transfer parent to progeny, however, it can lead to evolution directly by introducing new alleles into a population.

7 0
3 years ago
ancestors of giraffes with shorter necks could not reach branches high up in trees for food. this led to selection for longer-ne
hichkok12 [17]

With shorter necks, giraffe ancestors could not reach food-containing branches on tall trees. This resulted in the directional selection of giraffes with longer necks.

 

<h3>Why is choosing a direction necessary? </h3>

It nearly appears obvious that the giraffe's long neck developed as a result of a lack of food in the lower branches of trees. The giraffe has a significant advantage because it is taller than any other mammal and can feed where few others can. 

When compared to modern giraffes, the giraffe's ancient predecessors had a shorter neck. The plants that were lying at a higher level were inaccessible to them. Giraffe phenotypes have changed in various ways, and now have long necks to reach vegetation that is higher up. The extreme form is chosen above other features in directional selection. It was decided to choose the long-necked giraffe over the short-necked.

 

To know more about direction selection for longer necked giraffes visit:

brainly.com/question/3738222

#SPJ4

7 0
2 years ago
In order to retain heat, what occurs in the skin on a cold day?
liubo4ka [24]
C would be the answer, that way the cold temperatures won’t penetrate through
8 0
4 years ago
Nutrients are delivered and waste products are carried away from the cells of the posterior segment of the eye by blood vessels.
kolezko [41]

Answer:

The cells on the cornea are maintained by pheripheral vessels and surrounding fluids.

Explanation:

*- The capillaries of the limbus nourish the peripheral part of the cornea.

*- Tears supply of glucose in the tear film

*- Aqueous humor nourishing the outermost layers of the cornea the endothelium being a unicellular layer

6 0
3 years ago
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