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tatiyna
3 years ago
7

 Which one of the following criteria is necessary for natural selection to occur? 

Biology
2 answers:
Readme [11.4K]3 years ago
7 0
D. A struggle for existence is apparent.

If a struggle for existence is apparent, natural selection occurs because all of the weak/unfit/unadapted ones die.
taurus [48]3 years ago
5 0
A struggle for existence is apparent, so only the strongest survive.

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Sav [38]

Answer:

any of a large group of vertebrate animals that live in water, breathe with gills, and usually have fins and scales

Explanation:

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3 years ago
Plants are always considered to be autotrophs.<br> A. True<br><br> B. False
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Identify the complete predicate in the following sentence. The family enjoyed a tasty fish supper.
aksik [14]
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</span><span>The family enjoyed a tasty fish supper.</span>
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3 years ago
Before exploring energy balance and its effect on weight, you must first be able to use the vocabulary effectively.
valkas [14]

Answer:

1. When the number of calories a person consumes is equal to the number of calories he or she burns in a day, that person's body is in Energy Balance.

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3. Negative Energy Balance occurs when the number of calories a person bums in a day is greater than the amount he or she consumes.

4. Weight management involves applying strategies that allow someone to keep his or her body weight within a healthy.

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6. The Thermic effect of food refers to the number of calories burned in order to digest absorb, metabolze, and store food.

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Explanation:

This group of statements are related to body weight, the balance between the energy we consume through food and all the energy we burn through excercise and different activities, such as only mantaining our body temperature and normal processes.

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