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ASHA 777 [7]
3 years ago
9

Many sexually active american adolescents fail to avoid pregnancy because

Biology
1 answer:
Damm [24]3 years ago
6 0
<span>Many sexually active american adolescents fail to avoid pregnancy because they are not educated on contraceptive methods. </span>
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Which of following refers to the process that facilitates plant communities gradually changing over a period of time in order to
Reil [10]

Answer:

The correct option is B

<u> Succession</u> refers to the process that facilitates plant communities gradually changing over a period of time in order to respond to their environment.

Explanation:

Succession can be described as changes that occur in an ecosystem in response to the changes in the environment or any other disturbances.

Succession can be of two types. 1. Primary succession 2.Secondary succession

Primary succession occurs on lands where there was no life before. With time, plants start to grow here and a community is developed.

Secondary succession occurs on lands that have been destroyed due to any disturbances like a flood or a fire. Over time, new plants start to grow on this land and a community is developed.    

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Six fingered offspring are formed from normal fingered parents . why?
Alex777 [14]
<span>Polydactyly in its most common form, is an autosomal dominant mutation. Let's represent the mutation as P and the normal state as +. Thus, if both parents are heterozygous (P+), both would have the mutation (and thus have six fingered). They have 3/4 chances of having a child with the extra digit, 1/4 normal. </span>
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It is very efficient to drive a large truck to and from school true or false
Alecsey [184]
False is the answer, hope this helped
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