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Vesnalui [34]
3 years ago
15

Explain how an algal bloom affects the oxygen levels in a lake ecosystem.

Biology
1 answer:
NeX [460]3 years ago
8 0

Answer:

Algal bloom causes by eutrophication (when excess nutrients run into a body of water). Eutrophication provides nutrients for algal bloom. As a result, there is an increasing in algal bloom population. Increasing in algal bloom population can block the light that is needed by other organisms. This could impact these organisms survival. Furthermore, when these algae die, their body sink into the bottom of the sea, which consider as nutrients for bacteria, increasing bacteria population. This means that the respiration rate by bacteria is increasing as well. When bacteria respire, they need to absorb oxygen. Over time, these oxygen level will eventually decrease and later form a dead zone.

Explanation:

Hope this helps!

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Svetlanka [38]
I don’t see anything
6 0
3 years ago
15. Suppose a human blood cell containing a 0.9 percent solute concentration were put into a container of 30 percent solute solu
Vaselesa [24]

Answer:

Smaller

Explanation:

The human blood cell has a smaller percentage of solute concentration than the solution it was placed into. This means that the cell is hypotonic in comparison to the solution, and the solution is hypertonic compared to the cell. When a cell is placed in a hypertonic solution it undergoes crenation, meaning it shrivels up. Water moves from the lower solute concentration to the higher solute concentration. The water inside the cell moves outside to the hypertonic solution. This causes the cell to become smaller.

8 0
3 years ago
If the order of base pairs in a DNA molecule is changed, what might occur?
tatuchka [14]

Answer:

When you change the order of the base pairs in an organism, that is called a mutation. There are three types of mutations: a deletion, an addition, and a substitution. In a deletion, one of the three bases in a codon is pulled out, or deleted.

Explanation:

6 0
2 years ago
What trait distinguishes between the kingdoms of bacteria and archaea?
makvit [3.9K]

Answer:

Their Cell walls

Explanation:

  • Bacteria has a cell made up of peptidoglycan
  • Archaebacteria has a cell wall made of various compounds)
  • Their rRNA is different, so different taht tehy are placed on different part of the evolutionary tree.
8 0
3 years ago
Read 2 more answers
Which of the following statements is a correct explanation for the observation that all offspring exhibit a phenotype for a part
bearhunter [10]

Answer:

D) Neither of the parental genes is dominate over the other.

Explanation:

<em>Since the trait on the offspring is a mixture from both parent, it means that neither of the alleles from both parents is completely dominant over the other. Instead, each of the alleles contributes equally to the trait of the offspring.</em>

This effectively explains the fact that each trait exhibited by offspring is a blend of the traits from the two parents.

The correct option is D.

8 0
3 years ago
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