What technological advancement was necessary before scientist could begin to observe cells?

What is the physiology of the heart

Can all creatures can have their own kingdom if they have their own species too?

If dimples (D) are dominant to no dimples (d) in humans, what are all the possible genotypes of a man with dimples?

What do prokaryotes and eukaryotes have in common? O A. They both have mitochondria. O B. They both have chloroplasts. O C. They both have a Golgi apparatus. O D. They both have ribosomes.

Why are fossils in older rock layers less similar to present-day organisms than in younger layers?

Look at this definition: the inability to start a pregnancy after having unprotected vaginal intercourse for more than a year or the inability to stay pregnant for the full length of a normal pregnancy Which term does it define?

What relationship best applies between the pompeii worms and the bacteria?

What is the energy released during respiration used for?

How does the precision of measurements affect the precision of scientific calculations?

What are gametes??