Which process do scientists think provided earth with an oxygen-rich atmosphere?

A. spontaneous generation

B. radiometric dating

C. photosynthesis

D. respiration

Why do most enzymes stop functioning after being soaked in a strong acid or base?

In what place would you find the most organisms

What characteristic is shared by birds, salamanders, and sharks? A. Lungs B. Endothermy C. Four limbs D. Jaws and paired appendages (Im pretty sure its not A or B but idk)

A marine biologist wants to investigate the effect of ocean tides on certain aquatic ecosystems. Can this be studied by the scientific method?

The cell membrane controls the traffic of molecules into and out of the cell, prevents the entry of toxic material into the cell and permits selective uptake of nutrients.

An area where the soil contains a great deal of moisture is known as

Blood type is controlled by two equally dominant genes. What type of example is this? A. codominanceB. incomplete dominanceC. sex-linked genes D. recessive dominance

Which structure in the neuron transmits information to another neuron? a. cell body b. dendrite c. axon d. terminal branches?

Why does it matter if Osmosis is put into a "scab" or a "nosebleed?" Where would that leave him?

Why are green algae similar to green plants? A. They can have more than one nucleus in each cell. B. They have chloroplasts and store food as carbohydrates. C. They reproduce by spores. D. They both have peptiglycan in their cell walls.