What part of the amniotic egg provides food for the embryo?

a. the amniotic membrane

b. oxygen

c. the yolk

d. the shell

What is the order of the steps of cellular respiration?

What are three characteristics that adenoviruses, t7 virus, and papillomaviruses have in common

According to the continental drift theory, if you found a mountain chain on the eastern coast of North America, you would probably find its continuation where? A. the eastern coast of Africa B. the western coast of India C.

What best describes the fossil record?

The correct functions of your lungs contribute to the normal pH level of between 7.35 and 7.45 in your blood. If your lungs do not exchange and remove carbon dioxide from your blood, the blood pH will change. A reading of pH 6.

Explain what would happen to the population of frogs if:. a) Grasshoppers were to be killed by an insecticide? (2 marks)

Which organelle appears as a stack of membranes?

Which environmental factor controls the amount sunlight that reaches underwater plants and animals?

Which of the following choices is a biotic factor in the ecosystem? sunlight, water, deer, soil

Sodium chloride, or Na+Cl-, is an example of a molecule whose atoms are held together by which of the following? A. Hydrogen bonds B. Covalent bonds C. Metallic bonds D. Ionic bonds