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dem82 [27]
3 years ago
7

Can u help me plz it’s just a answer choice plz I beg u

Biology
2 answers:
Masteriza [31]3 years ago
7 0

Answer:

I believe that your answer is A) Speciation.

N76 [4]3 years ago
6 0

Answer:

Speciation

Explanation:

Over time, genetic variations can happen when organisms adapt to new environments, weather, etc. Like that thing with bears and how they all started out the same, but as they separated, the once that lived in the cold with snow got thicker fur (polar bears) and the ones that had access to a lot of fish became really big.

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A leading cause of blindness in the world today (excluding accidents) is a dietary deficiency of question 27 options: vitamin
Yuliya22 [10]
Well, the answer is A.) Vitamin A 
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3 years ago
What benefit does an organism gain by only using this method of reproduction?
alexdok [17]

Explanation:

In a stable or predictable environment, asexual reproduction is an effective means of reproduction because all the offspring will be adapted to that environment. In an unstable or unpredictable environment asexually-reproducing species may be at a disadvantage because all the offspring are genetically identical and may not have the genetic variation to survive in new or different conditions. On the other hand, the rapid rates of asexual reproduction may allow for a speedy response to environmental changes if individuals have mutations. An additional advantage of asexual reproduction is that colonization of new habitats may be easier when an individual does not need to find a mate to reproduce.

8 0
3 years ago
Which is the biggest planet in our solar system?what colour is it?​
yawa3891 [41]

<u>Jupiter</u><u> </u>

<em>The largest planet in our solar system is Jupiter. Its got shades of white, orange, brown and red</em>

Hope this helped you- have a good day bro cya)

5 0
2 years ago
In animals the sensory capabilities evolved over hundreds of millions of years. It is therefore not surprising that different se
I am Lyosha [343]

Answer:

Olfactory system

Explanation:

In an olfactory system, odor molecules are perceived by the olfactory receptors. These odor molecules are nothing but the chemicals which are then transduced as chemical signals into the electrical signals and sent to the brain. The brain perceives these electrical signals as smell.  

The odorant particles bind to the specific receptors located at cilia which then signal through the G protein Gαolf which then activate adenylate cyclase. Adenylate cyclase leads to cAMP production which then open a cyclic nucleotide-gated ion channel through which both sodium and calcium ion entern into the cell. Calcium ion then activates chloride channels and thereby causing transduction of electrical signal

6 0
3 years ago
Complete each sentence by dragging the proper word or phrase into the appropriate position. Then place each sentence in order of
hichkok12 [17]

Answer:

1. When two bones join together and fuse so that no visible separation occurs, it is referred to as a(n) <u>synostosis,</u> or bony joint.

2. Bones that join together and are held in place with threads of collagen, form a joint that is called a(n) <u>synarthrosis</u>.

3. The most complex joints are called <u>synovial</u> joints. They display varying amounts of mobility.

4. Bones joined together with cartilage between the ends of the bones, form a joint called a(n)<u> amphiarthrosis</u>.

Explanation:

The ossification of the connective tissue between two bones results in the fusion of them. As a result, now there is one bone instead of two. It's is called synostosis.

A synarthrosis is a joint that has very little or no movement at all. It has threads of collagen around them that keep the joint together.

A synovial joint is a diarthrosis joint. They have a wide range of mobility and are complex due to the number of components:

  • A fibrous joint capsule connected to the two bones.
  • A synovial membrane.
  • Synovial fluid to lubricate the joint.
  • Articular cartilage on the bones' joint surfaces.

An Amphiarthrosis is a joint with limited mobility. This type of joint has fibrocartilage that connects the two bones. We can find it in the pubic synthesis.

7 0
3 years ago
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