Plants produce hormones, which make them respond to
environmental stimulus. This particular plant lives in a hot, and dry
environment. Which organ system allows this plant to conserve
water?
Select one:
1.
Reproductive system
2.
Root system
3.
Dermal system
4.
Vascular system

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

When is your breathing likely to speed up? a. when your white blood cells increase b. when your cells need more energy c. when your heart cells need more carbon dioxide d. when your blood cells have too much oxygen