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kvasek [131]
2 years ago
6

Which of these is required for natural selection to happen?

Biology
1 answer:
boyakko [2]2 years ago
3 0
Hey dude you need to put the choices
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Which method of fly control would be MOST harmful to other organisms in the environment? A Spraying broad-range insecticides B u
VARVARA [1.3K]

The right answer is A.

Insecticides are active substances or phytosanitary preparations with the property of killing insects, their larvae and / or their eggs. They are part of the family of pesticides, themselves included in the family of biocides, both of which are regulated in Europe by specific directives.

Some pestiids such as organoclorides are broad-spectrum, ie they act on several insects at the same time (whether they are good or bad).

4 0
3 years ago
Select THREE examples of pure substances.
Svetlanka [38]

Answer:

it would be C, D, E

A is a mixture

B is a mixture

C is a pure substance because Oxygen gas by the chemical symbol O2, is strictly pure

D is pure substance because Gold is one of the basic elements found naturally in nature, and as such, in its pure form

E is a pure substance because Both ice and liquid water are the same substance. H2O Though ice water is a mixture of both solid and liquid it is a pure substance, based on the molecular structure of its components .

F is a mixture

Hope this helps! If so please Mark brainliest and rate/heart if it does help!

7 0
3 years ago
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13. The diagram below represents a model cell setup. The locations of three different substances are indicated in the diagram. T
Troyanec [42]

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hihihiihihjh n i

Explanation:

3 0
3 years ago
What enzyme is responsible for dissolving the blood clot after regeneration of the vessel wall is complete?
Sonbull [250]

Answer:

Plasmin

Explanation:

Plasmin is a serine protease also referred to as fibrin digesting enzyme, it is responsible for the dissolving or degradation of blood clot. The process by which plasmin degrades blood clot is called fibrinolysis. Note that plasmin (active) is formed from an inactive enzyme called plasminogen.

5 0
3 years ago
Enzyme synthesis in a living cell occurs at which cytoplasmic organelles? A) vacuoles B) centrioles C) chromosomes D) ribosomes
joja [24]

Enzymes are proteins

protein synthesis ocurs in the ribosomes

7 0
2 years ago
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