In a multicellular organism, organs carry out a variety of life functions. in a single-celled organism, these functions are performed by
a. tissues
b. organelles
c. organ systems
d. organs

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.