What is the purpose of the plasma membrane?
a.
makes food for the cell
b.
reproduces cells
c.
keeps the cell small
d.
encloses specific structures

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.

What is a general feature of a species that varies from one individual to the next (skin tone,eye color or hair color)? a.organism b.trait c.character