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Archy [21]
3 years ago
10

If finches on the Galapagos Islands had such different beaks, how could Darwin think they shared a common ancestor from the main

land?
Biology
1 answer:
nydimaria [60]3 years ago
3 0

Answer:

i just learned about this

Explanation:

its because each began to live in different areas on the Galapagos islands and they each needed to adapt to their meals and their surroundings. So simply evolving and adapting

I hope this helps u!

Pls give a brainliest and a thx ;)

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The bacteria have an initial concentration of 1000 cells/cm3 . Each cell divides once every 30 minutes. Calculate how long it wi
Levart [38]

It will take <u>120 minutes</u> for the concentration to become > 15000 cells/cm³

<u>Given data:</u>

Initial concentration ( density ) = 1000 cells / cm³

Target/final concentration = > 15,000 cells /cm³

<h3 /><h3>Calculating the concentration every 30 minutes </h3><h3 />

<em>note</em><em> : Given that each cell divides every 30 minutes </em>

  • <u>After the first 30 minutes </u>

Concentration = 2000 cells / cm³

  • <u>After 60 minutes </u>

concentration = 4000 cells / cm³

  • <u>After 90 minutes </u>

concentration = 8000 cells / cm³

  • <u>After 120 minutes </u>

concentration = 16000 cells / cm³

Therefore after 120 minutes the concentration of the cells will be greater than 15000 cells/cm³ ( i.e. 16000 cells/cm³ )

Learn more about concentration : brainly.com/question/17206790

4 0
2 years ago
Why are coastal stabilization structures built along coastlines? choose all that apply?
Dima020 [189]
Hey there,

Answer:

<em />1) To stop beach sand erosion
2) To protect coastal property from erosion 

Hope this helps :D

<em>~Top</em>
7 0
3 years ago
A cross between a plant with red flowers (R = dominant) and a plant with white flowers (r = recessive) yielded 47 plants with re
fredd [130]

Answer:

A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the parents are Rr and rr.

Explanation:

I took the test and got it right.

3 0
3 years ago
All these belong to the second line of defense except
babunello [35]

Answer:

Option D, Gastric Juices

Explanation:

The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.

Hence, gastric juice does not belong to second line of defense.

Thus, option D is correct.

6 0
3 years ago
He transfer of pollen from the male reproductive structure to the female reproductive structure is called
yarga [219]
The answer is pollenation 
5 0
3 years ago
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