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Katyanochek1 [597]
2 years ago
11

True or False; Diversity of life has decreased over Earth's history.

Biology
1 answer:
sammy [17]2 years ago
4 0

Answer:

true

Explanation:

Just think about extinction and how many species we have lost throughout time.

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Beta particles cannot penetrate very far into solids because they _____.
Bad White [126]

because they have have negligible mass            

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3 years ago
How does negative feedback mechanism work in osmoregulation
Charra [1.4K]

Answer:

Osmoregulation is an example of a negative feedback, homeostatic control system. This system detects changes in the salinity of the water Chinook salmon live in, working to keep the body water concentration constant.

Explanation:

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3 years ago
Ellis-van Creveld syndrome is a form of dwarfism that is inherited in an autosomal recessive pattern. This particular form of dw
jenyasd209 [6]
A) A textbook definition would be that genetic drift is: a random change in allele frequency caused by a series of chance occurences that cause an allele to become more or less common in a population. In layman's terms, this means that genetic drift happens when luck makes the genetic pool of the population to deviate from what is expected.
B) The cause for this genetic drift is the aformentioned couple. Because amish communities are small and they select partners from their community, having even a couple of carriers of alleles in a community can make the allele freuency much larger than expected; for example, if the community was 100 persons, the percentage would be in the order of 1%, still much larger than the general population. Thus, the cause here is that a small population had a couple of carriers.
C) Sexual reproduction leads to a mixing of alleles from both mother and father and helps diversity. When a population is isolated, the gene pool is fixed and no new genes can come in, reducing diversity. Also some people that have an allele might die, hitting diversity even more. Finally, having a small population creates a strong pressure in some circumstances that leads to elimination of some traits and diversity.
7 0
3 years ago
An increase in sea surface temperature leads to a/an _____________ in water vapor, which leads to a/an _____________ in rainfall
Karolina [17]

Answer:

increase in watervapor hence an increase in rainfall

6 0
3 years ago
The proposed kingdom Euglenozoa includes protists with one or two _____ emerging from an anterior pocket.
BigorU [14]
The proposed kingdom of euglenozoa includes protists with one or two flagella emerging from an anterior pocket
This flagella give them the ability to swim/moved throughout the water where they usually live

hope this helps

5 0
3 years ago
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