Which of the following statements is true?
A.
Scientific explanations only consider evidence that is observed within controlled, laboratory experiments.
B.
Scientific explanations are built by combining evidence that can be observed with what people already know about the world.
C.
Once an idea becomes a scientific theory, it is permanent and cannot be changed.

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?