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nadya68 [22]
2 years ago
9

Evolution can be described as the change in __________ frequencies of a __________ over time.

Biology
1 answer:
Tresset [83]2 years ago
3 0

Explanation:

In population genetics, the term evolution is defined as a change in the frequency of an allele in a population. ... The allele frequency within a given population can change depending on environmental factors; therefore, certain alleles become more widespread than others during the process of natural selection.

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Aside from natural selection, darwin was the first biologist to propose:
taurus [48]
Charles Darwin also was the first biologist to propose the use of the phylogenetic tree or the evolutionary tree. The phylogenetic tree illustrates how organisms are related, usually by traits. It also represents how organisms are related by common ancestors.  Other scientists refer to the phylogenetic tree or parts of the tree as a cladogram. 

Attached is an example of a simplified phylogenetic tree.

4 0
2 years ago
Sediments moving from an upper layer to the water layer in an ecocolumn can represent ______ ?
MAVERICK [17]

Answer:

Run off of animal/plant waste

Explanation:

The run off of animal/plant waste occurs in 3 layers:

upper layer: the terrestrial chamber, the decomposition chamber, and the aquatic chamber.

The terrestrial layer represents the land habitat including plants and insects whereby waste are moved into the  

The decomposition layer much like a compost pile where it decomposes and then move into

The aquatic layer much like a mini freshwater habitat for aquatic plants and even small fish, it serves as food sources for them

8 0
2 years ago
Read 2 more answers
Why would a patient with a pheochromocytoma sweat excessively, have facial pallor, and bc constipated?
liubo4ka [24]

During the sympathetic reaction the blood flow is augmented to the skeletal muscles and brain. Then the blood flow will diminished to the bowel which may led to constipation. The person will perspire excessively and may lead to dehydration which eventually may constrain bowel function.

6 0
2 years ago
Which statement is correct about the total mass of glucose formed during photosynthesis?
Bumek [7]

The second one probably because of the law of conservation of mass where mass is not created or destroyed, so the mass has to be the same.

4 0
3 years ago
Read 2 more answers
A small 21 kilogram canoe is floating downriver at a speed of 3 m/s. What is the canoe's kinetic energy?
astraxan [27]
The formula for finding the kinetic energy of an object is:
KE = 0.5MV^2,
Where:
M= Mass
V = Speed
From the information given above,
M = 21 kg
V = 3 m/s
KE = 0.5 * 21 * 9 = 94.5
Therefore, the canoe's kinetic energy is 94.5 J
6 0
3 years ago
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