Describe one action you can take to protect your sight

Why is sustainable agriculture so important?

By 2 weeks after fertilization the morula has implanted into the uterine lining and transforms into a(n) . this time is when the , or the organ that will provide nourishment to the fetus by exchanging nutrients and waste products, begins to develop.

Muscles and joints that can move through their full range of motion are more powerful, more coordinated, and less likely to be injured.