Can someone me with these : : 1: what two processes give off co2 , in the environment? 2: what process gives off o2 in the environment? 3: what process makes the water vapor in the atmosphere available to the organisms on land? 4: how does water vapor return to the atmosphere? (2 ways)

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone