When do cells differentiate? That is, when do cells first become different kinds of cell—muscle cells, nerve cells, reproductive cells, etc.?

A. during the 1st trimester
B. before fertilization
C. during the 3rd trimester
D. during the 2nd trimester

Answer is A

Plants are used for so many things. in your house alone, you can probably look around you and see where plants have been used. for this project, you will identify various uses of plants in your home. directions make a list of objects, products, and any other items around your house where plants were involved in the production of the item. you should have a list of at least twenty items. then respond to the following questions: note: your list of objects and the answers following should be at least 200 words in length. what if plants no longer existed on earth? how would your life be different?

How do living things obtain phosphorus

What processes would you expect to be key in the production of yogurt ?