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Paha777 [63]
4 years ago
7

How did Darwin’s observations of these tortoises help him form the theory of evolution by natural selection

Biology
1 answer:
Rainbow [258]4 years ago
3 0

Answer:jdhndndbbdbxbdbd

Explanation:

bhejshdhdhdhhn

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Refer to Animation: Countercurrent Multiplication. What would you predict to be the effect on an animal species of having longer
attashe74 [19]

Answer:

The correct answers is: I would predict that animals with longer loops of Henle would be able to concentrate their urine more than animals with shorter loops, and thus they would more likely survive in desserts and other dry areas.

Explanation:

The<em> Loop of Henle</em> is a tubule system that connects the proximal convoluted tubule to the distal convoluted tubule in a nephron, the functional and structural unit of the kidney. Its primary job is to establish a concentration gradient in the kidney's medulla by creating a high urea concentration deep in the medulla using a countercurrent multiplier system that uses electrolyte pumps. Through this mechanism, <u><em>water is reabsorbed to concentrate the urine and impede dehydration</em></u>.

The length of the loops of Henle is of great importance for the countercurrent multiplier system - <u>the longer they are, the more concentrated the urine can get</u>. Therefore, animals with longer loops can survive better in habitats where there is not much water around.

6 0
3 years ago
A leaf in which small veins extend outward from a single main veins has what type of ventaion?
e-lub [12.9K]
Well...This might helps <span>Parallel venation is characteristic of monocots, the veins are usually parallel to each other along the length of the leaf. </span>
Pinnate venation is the veins are in a branching pattern, characterized by one major vein(called midrib) with smaller veins extending outward from it.
<span>Palmate venation is characterized by two or more major veins extending outward from one point like the fingers extending form the palm of a hand</span>
8 0
4 years ago
FIRST ANSWER GETS 100 POINTS
Anastasy [175]
Receive deoxygenated blood from the body
4 0
3 years ago
The process by which green plants make food is called
Dmitrij [34]
A. Photosynthesis. Every plant can do this, fundamental process, and we can call, this, photosynthesis. I hope this helped you!
6 0
3 years ago
The ability of body systems to increase their function, given the need to adapt, is known as the The ability of body systems to
Whitepunk [10]

Answer:

The ability of body systems to increase their function, given the need to adapt, is known as the <u>physiologic reserve.</u>

Explanation:

The ability of body systems to increase their function if the need to adapt arises is known as a physiological reserve. Frequently, this term is used to refer to the operating limits of a particular physiological system when under stress. When this stress exceeds the ability of a particular organ or system to compensate for it, organ failure occurs. Adaptation achieves its highest efficiency when changes are generated gradually/progressively rather than abruptly. In aging, this reserve is diminished and therefore the ability of the organs to adapt to stress is lower, that is, the ability to adapt is reduced in extreme ages.

6 0
3 years ago
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