According to cell theory, all cells carry out the functions needed to sustain life. that means all cells must contain
a) dna.
b) a nucleus.
c) organelles.
d) a control center.

You want to cultivate some exotic plants at your farm. however, the climate is chillier than the temperature range favorable to the crop. which is the best method to use for the cultivation of this exotic crop? a. use a crop rotation method b. use a lot of fertilizer c. prepare the seed bed properly d. use a greenhouse e. use irrigation