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lesya692 [45]
2 years ago
8

Which of these is the most serious impact to an ecosystem after a tornado?

Biology
1 answer:
SIZIF [17.4K]2 years ago
5 0

Answer:

D

Explanation:

animals relocating to a different habitat could cause major impact in the food chain and would need different survival skills

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Populations evolve for many reasons. Suppose there is a population of plants that have either purple flowers or white flowers, a
sattari [20]

Answer: natural selection

Explanation:Natural selection, gene flow, gene drift and mutation are the mechanisms for EVOLUTION.

The dominant purple allele must have been acquired from previous parent gene, by natural selection

Definitely the available   alleles from previous flower population were white and purple flowers. But, because the parents of purple flowers exhibit VARIATION, in their gene pool,  they showed dominance over  the recessive white colour flowers in the same population.  

◼ from Darwin’s observation and deduction, Organisms who acquired certain characteristics from variation  tend to survive than others, and therefore pass these inheritable characteristics to their offspring.

◼Thus the purple flowers dominated the population for the available resources, among the other flowers colours, (competitions) therefore it leads to a stable population in size after a period of time., while the white colour flowers are recessive

◼Darwin concluded that, variants of best adaptation will be selected for by natural conditions operating in the environment of the population at that particular period (natural selection).

Based on this, natural selection takes place, and the purple flowers with best variation will have selective advantage (dominance)above white colour flowers(recessive).

Consequently, they have higher survival rates compare to white flowers in the population this is   survival of the fittest by natural selection of purple flowers

The frequency of the white colour flower will reduced because of less manifestation of traits from generation to generation from reduced gene pool due to recessive trait, however the frequency of Purple flower will increase because the number of copies of allele of purple flowers is greater than the total number of all the flowers population( white flowers+purple)

5 0
3 years ago
If all organisms originated in their present forms during a single event, Darwin wondered, why was there a distinctive clusterin
irinina [24]

Answer:

thanks

Explanation:

for fr pts....sssßwaaaaaasss

5 0
2 years ago
How do animals warn other animals that they are dangerous? HELP
Nataly [62]

Answer:

animals will use sound, colors, and stance. Another way would be by leaving their imprint or mark on their territory. For example a dog peeing on an area they used.

Explanation:

Hope this helps!! :)

6 0
2 years ago
Please help. What safeguards are in place to protect Americans from unsafe food? Are these methods science-based?
Helga [31]

Answer: The FDA and USDA cerate food safety programs, safeguards to protect Americans, to protect people from unsafe food. The FDA has monitoring programs for pathogens, naturaltoxins, pesticides, etc.; their methods are science-based.

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2 years ago
The average, year after year conditions of temperature, precipitation, winds, and cloud in an area are known as its
MAVERICK [17]
The answer is climate.
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3 years ago
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