Which type of mining is likely the least harmful to the environment?

a.

surface mining

b.

placer mining

c.

subsurface mining

d.

none of the above

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Identify the missing parts of the carbon cycle

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere