What first walks with 4 legs, then 2 legs, then 3 legs?

What is one advantage of sexual reproduction over asexual reproduction? A. an increase in genetic variation B. an increase in genetic mutation C. a continuation in genetic weakness D. a decrease in genetic variation

During the light-independent reaction of photosynthesis, is light energy is used to split water molecules generating protons and oxygen molecules?

Which species' biological classification translates to the "goddess of hairy shellfish" and was first discovered in the Pacific Ocean in 2005?

What structure prevents water from escaping a plant's leaves? a. seed b. angiosperm c. cuticle d. sporophyte

The geological time scale indicates the order of eras is Cenozoic as the most recent; the middle era is the Mesozoic, with dinosaurs as the major group; and the earliest era is the Paleozoic.

Arrange the phases in the life cycle of the Sun in order from the birth of the Sun to the time in the far distant future when the Sun has cooled.

Which of the following statements is true of the process shown below? A. The cells formed at the end of the process only have half of the chromosomes as the original cells. B.

Two brown-eyed parents I have produced three blue-eyed son. If they have another child, what are the chances that I would also have blue eyes?

How you know that paraquat did not cause the coral bleaching

The process by which larger molecules or structures are built up from smaller ones is called: