What is one change that occurs to the body during infancy?​

Explanation:

Some of the most dramatic physical change that occurs during this period is in the brain. At birth, the brain is about 25 percent of its adult weight, and this is not true for any other part of the body. By age 2, it is at 75 percent of its adult weight, at 95 percent by age 6, and at 100 percent by age 7 years. Figure 2.

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infant raises up (upper torso, shoulders, and head) with arms when lying face down (on tummy). Neck muscles are developed enough to allow the infant to sit with support, and keep head up

Explanation:

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answer: the answer is b

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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