input: OPTIONS:
- erosion
- currents
- wind
- precipitation Now, answer this question: Q: What natural process allows water to return again to the earth's surface? A:
A:
output: precipitation

Q: What organ system is different in men and women? A:

OPTIONS:
- nervous organs
- respratory organs
- lymphatic organs
- reproductive organs

Answer: reproductive organs

Problem: OPTIONS:
- insect hormones
- animal proteins
- animal hormones
- plant hormones
Q: Q: Ethylene, gibberellins, cytokinins, absciscic acid, and auxins are examples of what? A:
Answer: plant hormones

Problem:OPTIONS:
- conifers
- gymnosperms
- grasses
- angiosperms

Q: What are the most diverse plants on earth? A:
****
A: angiosperms

Q: Water affects the availability of what important element in aquatic environments and in flooded soils? A:
OPTIONS:
- carbon
- nitrogen
- carbon dioxide
- oxygen
oxygen

Q: What is the name of the process in which both the system and its environment can return to exactly the states they were in by following the reverse path? A:
OPTIONS:
- conductive process
- Remote process
- Different Process
- reversible process

Answer:
reversible process