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labwork [276]
3 years ago
15

According to the food chain below, which of these organisms most likely contains the least concentration of toxins (DDT) ?

Biology
1 answer:
agasfer [191]3 years ago
5 0

Answer:

Hawk

Explanation:

Dichlorodiphenyltrichloroethan which is also known as DDT is a colorless, tasteless and almost odorless crystalline chemical compound. It was originally developed as an insecticide and it causes harm to wildlife animals.

When the chemical are sprayed or gets in contact with the soil it is the terrestrial organisms such as plants and primary consumers who gets affected the most due to direct contact with the chemical.

Animals such as hawks who are arboreal and tertiary consumers from the list of options don’t get affected directly from the source of the DDT contamination which makes them least affected.

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1. This is one structure essential in propagating young trees
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Answer:

1. B

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3. C

4. A

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Explanation:

A nursery bed can be defined as a specially prepared temporary plot of land or garden which serves as a home for raising seedlings (young plants) prior to planting them in the main location (area). Thus, when older trees in the environment or surrounding dies or are cut-off, these younger plants (trees) propagated in the nursery bed are transferred to replace them.

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3 years ago
what is one major function of the endomembrane system? producing and storing energy, transporting subtances in a cell, manufactu
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