Which organelle contains digestive enzymes to break down old cell plants?
a)the cytoplasm
b)the cell membrane
c)the lysosome
d)the chloroplasts

Select all the true statements about the cosmic microwave background radiation

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Twind is considered to be an abiotic factor because it.?