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podryga [215]
4 years ago
12

Zebra mussel populations are growing explosively in the river systems of the central united states. the best explanation for thi

s unchecked population growth is that
Biology
1 answer:
Likurg_2 [28]4 years ago
5 0
The best explanation for this unchecked population growth is that the predators are too few to slow down population growth of mussels. The environment limits population growth by changing birth and death rates. The factors affecting population size and growth include biotic factors such as food, disease, competitors, and predators and abiotic factors such as rainfall, floods, and temperature. Predators affect individual growth rates of surviving prey by acting to increase growth rate by thinning the density of prey populations, which releases survivors from competition.<span />
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A humpcnid enocaom is made of two or more simple machines.
zhuklara [117]

<em>Hi! :) :) The question statement says</em>: <u>"A Humpcnid Enocaom is made of two or more simple machines."</u>

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The answer/def: <u><em>Compound Machine </em></u>

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3 0
4 years ago
Consider the following food chain: garden plants are eaten by snails, which are eaten by birds, which are eaten by the household
SIZIF [17.4K]
The garden plants and snails stay balanced as they are still being eaten. However, if the cat is removed, the birds will overpopulate and then the snail would be eaten and decrease faster which gives garden plants an increase in population due to the decrease in snails. Hope this helps! 
6 0
4 years ago
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one gene in a population of snails determines whether they are poisonous. being poisonous (P) is dominant over not being poisono
Harlamova29_29 [7]

Answer:

F (pp) = 0.04

F (Pp) = 0.32

F (PP) = 0.64

Explanation:

Studying population genetics, we used the Hardy-Weinberg equilibrium model. In the case of snails, the H-W principle predicts that the total number of cases in the population should follow the following equation: PP + 2.Pp + pp = 200.

If a population has 200 snails and 8 are affected by a recessive condition, we have 4% affected, or 0.04.

This means that 0.04 corresponds to p², and p corresponds to 0.2.

Therefore, P is equal to 0.8 because p + P = 1.

Knowing the allele frequencies, we go to the frequency of the genotypes.

F (pp) = p² = 0.04 = 8 snails

F (Pp) = 2.Pp = 0.32 = 64 snails

F (PP) = P² = 0.64 = 128 snails

7 0
4 years ago
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3 0
4 years ago
Theodore wants to determine if a new diet medication will make rats lose weight. What is the independent variable?
valentina_108 [34]

Answer:

The amount of weight lost and the diet medication

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3 years ago
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