Which cells in plants are similar to stem cells in a human embryo? 1-Parenchyma cells

2-Collenchyma cells

3-Epidermal cells

4-Meristematic cells

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Amajor source of energy for your body comes from

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz