Which of these statements is true about adaptive evolution? a. the ability to learn plays a key role in the process of adaptive evolution. b. viruses play a key role in the process of adaptive evolution. c. sudden changes in the somatic cells of organisms play a key role in the process of adaptive evolution.

The correct answer will be option-C.

Explanation:

Adaptive evolution is the evolution which resulted from the progression of the advantageous phenotype in the population. The adaptations in a population occur as a result of the natural selection which causes the change in the alleles to produce adaptable features in an organism.

The changes due to mutation take place in the somatic cells which are passed on to the offspring to become fit in the environment and increase their chances of reproduction and survival.

Thus, Option-C is the correct answer.

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.