Which is produced immediately after a plant sperm cell fertilizes an egg cell?
a. a zygote
b. plant nutrients
c. sweet nectar
d. a spore

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.

The most effective way to provide children with safety messages is to

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо