How long ago did the first Homo sapiens live

How do we know that dna replication occurs during interphase, not early in mitosis? how do we know that dna replication occurs during interphase, not early in mitosis?

Which type of muscle tissue is found inside hollow organs, such as the stomach, intestines and blood vessels?

One of Mary and Jose's classmates agreed that the conditions for taking the survey were controlled, but she said that the results were not valid.

Why is it that traditionally woman in minorities have been underrepresented in the sciences? How does this change in your generation?

The energy available in food can be measured in a lab by

Which is a renewable resource? A) coal B) sunshine C) gasoline D) natural gas

How are fitness and adaptation important to natural selection?

Where do the light-independent reactions of photosynthesis occur? A. Stroma B. Thylakoids C. Cell cytoplasm D. Intermembrane space

What causes pioneer grasses and weeds that have grown in an abandoned field to die?

What specific event triggers the uncovering of the myosin binding site on actin?