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svp [43]
3 years ago
14

How do nitrate levels affect the health of a water system?

Biology
1 answer:
Shkiper50 [21]3 years ago
8 0
It doesn’t have a effect on aquatic insects or fish. But it can create conditions that make aquatic insects/fish difficult for them to survive.
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Which clade is composed of eukaryotes which are multicellular and heterotrophs?
antoniya [11.8K]

Answer:

Animal clade

Explanation:

<em>A clade is used to refer to all members of group of organisms that share the same ancestor.</em>

Animals are the only group of living organisms that are eukaryotic, multicellular as well as heterotrophic in nature.

They are eukaryotic because their cells have nucleus and membrane-bound organelles like mitochondrion and chloroplast.

They are multicellular because their bodies are made up of more than one cells. The simplest animal (sponge) is made up of several cells while the most complex animal (human) is made up of millions of cells.

Animals are heterotrophs because they lack the capacity to manufacture their own food. They depend on external source for their food. Particular, animals ingest their foods, digest it internally and egest undigested food/waste materials.

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3 years ago
How does light travel?
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D, light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.
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Artificial Selection.
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1.) Achodroplasia is a autosomal dominant disorder, the suspected case suggested that inorder for the parents to produce and offspring with achondroplasia. One parents must have a single mutant gene of achodroplasia to be inherited by his offspring. for this case, It is suggested that the offspring might have developed its own mutant gene as it only affect 1 in 25,000 birth. There is changes of genes during early development.

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3 years ago
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