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Mariana [72]
3 years ago
10

Do humans have an open or closed circulatory system? Explain.​

Biology
1 answer:
mixer [17]3 years ago
4 0

Answer:

Explanation:

Organisms have different forms of circulatory systems. Humans have a closed circulatory system, while many mollusks and other invertebrates have an open system. In a closed circulatory system, blood is enclosed within blood vessels.

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PLEASE HELP MEEEEE
Papessa [141]

Answer:

Farm prices would drop due to a higher supply of unsold goods but no demand change.

Aid would shift and all farmers receiving subsidies would receive food stamps instead.

Food stamp recipients would replace subsidies by spending more money on agriculture.

Wholesale commodities prices would increase and create a devaluing of food stamps.

8 0
3 years ago
Read 2 more answers
In the term 2pq of the Hardy-Weinberg equation. Why is the multiplication by two necessary?
Gnesinka [82]

Answer:

The correct answer is : option B.

Explanation:

Hardy–Weinberg equilibrium is a mathematical model that states that genotype percentage or frequency in a population and allele in a population remains stable or constant to generations if there are no evolutionary influences present.

Hardy Weinberg equation is :

            P²+2pq+q² = 1

Here, p² represents the frequency of genotypes dominant homozygotes (AA) in a population in equilibrium. The term 2pq represents the frequency of heterozygotes (Aa)  as there are two ways of developing heterozygous individuals either dominant from the egg and recessive from sperm or vice versa. and the term q² represents the frequency of recessive homozygotes (aa).  

Thus, the correct answer is : option B.

3 0
3 years ago
What kinds of bonds can form between two adjacent water molecules
Nimfa-mama [501]

Hydrogen bonds

hope this helps :)

8 0
3 years ago
Genes/traits are different for each organism because...
Bond [772]

Answer:because we all have different anscestors And the traits come from all of them and you get some from your moms side and dads side

Explanation:

8 0
3 years ago
Name two substances in the body that will move based on the principles of diffusion
almond37 [142]
Two substances in the body that will move based on the principle of diffusion are CARBON DIOXIDE AND OXYGEN.
Diffusion is the process by which molecules of a substance move from the region of higher concentration to the region of lower concentration. Carbon dioxide and oxygen can easily move in an out of the cell via diffusion.<span />
6 0
3 years ago
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