Which of the following about abiotic factors in ecosystems is true?
a. abiotic factors in healthy ecosystems are not in balance.
b. abiotic factors are located in the soil of ecosystems only.
c. abiotic factors are part of a dynamic system.
d. abiotic factors in ecosystems are used up by the living components.

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Which chemical equation is unbalanced? which chemical equation is unbalanced

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.