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yaroslaw [1]
3 years ago
11

Changing a river into a lake is basically what a large dam does. One reason we do this to create reservoirs of fresh water. Howe

ver, dams change the local ecosystem in a big way. What is one negative impact of building a dam
Biology
1 answer:
rjkz [21]3 years ago
6 0
One negative impact of building a dam could be that it affects natural habitats of animals who live in and around the river. When you build a dam, the river's height becomes smaller because a huge amount of water becomes technically removed or blocked. This can affect animals such as fish or beavers or anyone who needs that water.
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Which of the following natural features has been most strongly affected by erosion?
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The appalachian is my answer as the warm air rises from the coast wind is winding it down.
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3 years ago
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A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to
galina1969 [7]
From the given information above, the answer would be that type O blood is not dominant. To explain this, all blood types consist of genotypes and these genotypes consist of two letters. For blood type A (A, i) and (A, A); for blood type B (B, i) and (B, B); For blood type AB, there is only one which is (A, B) as well as for O which is (i, i). The capital letters are considered as the dominant whereas, the lowercase letters are recessive. So to conclude, blood type O is a recessive blood type. Going back to the information given, the father is blood type A which is (A, i) whereas the mom has a blood type O (i, i) and the daughter is also blood type O (i, i). Therefore, what the daughter got from his dad is i, and another i from the mother, which makes her having a blood type O.
3 0
4 years ago
A type of plant that produces red flowers is crossed with a plant that produces white flowers. The alleles for flower color exhi
Illusion [34]
The answer is <span>25% red : 50% pink : 25% white
</span>
A - allele for red flowers
a - allele for white flowers

AA - flowers with red flowers
Aa - flowers with pink flowers
aa - flowers with white flowers

The cross looks like:
Parents:          Aa     x     Aa
Offspring:    AA    Aa   Aa    aa

Red flowers (AA): 1/4 = 0.25 = 25%
Pink flowers (Aa): 2/4 = 0.50 = 50%
White flowers (a): 1/4 = 0.25 = 25%

8 0
4 years ago
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Option n.o 1...............

7 0
1 year ago
what do biologists study changes in amino acid sequence when trying to determine causes of genetic variation?
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Answer:

reason for studying human genetics is that it gives us a powerful tool for understanding and describing human evolution. At one time, data from physical anthropology (including information about skin color, body build, and facial traits) were the only source of information available to scholars interested in tracing human evolutionary history. Today, however, researchers have a wealth of genetic data, including molecular data, to call upon in their work.

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3 years ago
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