Select all of the ways chemical weathering can occur that are listed below.
a. the oxidation of iron
b. the formation of clay
c. the dissolving of limestone
d. the breaking of rock into smaller pieces

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?