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Dominik [7]
2 years ago
7

DDT was used to do what? A. fetralizinh soil B. kill insects C. form ozone D. feeding animals

Biology
1 answer:
stiv31 [10]2 years ago
7 0
DDT was once used as an insecticide to B. kill insects. It was banned in 1972 because it thinned the eggshells of birds of prey like the patriotic bald eagle and the peregrine falcon.
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A genetic factor for a trait that is always expressed when it is present is best described as _____.
murzikaleks [220]
If it is always expressed it is dominant, also dominant allele is a possible answer. If it is not expressed unless both alleles are the same, it is recessive.
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3 years ago
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Can speed up chemical reactions
Jlenok [28]
Catalysts or if it’s in the body it’s usually a biological catalyst called enzymes, all catalysts speed up reactions without being changed or changing the reaction
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3 years ago
True/False: Unicellular organisms are made of a single cell.
MakcuM [25]

Answer:

yes

Explanation:

yes because they are only made of one cell

6 0
2 years ago
Which type of oscillation would most likely produce an electromagnetic wave?
Art [367]
Electromagnetic waves are waves propagated by simultaneous periodic variations of electric and magnetic field intensity that include radio waves, infrared, visible light, ultraviolet, X-rays and gamma rays.

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On the other hand, resonance oscillation refers to the increase in an amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system.

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3 0
3 years ago
The process by which a cell receives and responds to incoming messages is called __________ transduction.
tresset_1 [31]
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