Water's physical and chemical properties make it an agent of both mechanical and chemical weathering. Which of the following are examples of chemical weathering processes? Select all that apply.
A. Water enters cracks in rocks, freezes, and expands.
B. Acidic water dissolves certain rocks and minerals.
OC. Moving water breaks down small rocks as it carries them downstream.
OD. Rocks absorb water, which reacts with their molecules.

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

If the dimensions of a cube-shaped cell with a length, height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6