Question: Q: The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this? A:
OPTIONS:
- dorsal surface
- posterior surface
- anterior surface
- abaxial surface (or abaxis)
Answer: abaxial surface (or abaxis)

input with options: Q: How is population density expressed? A:
OPTIONS:
- per arable land
- number per household
- arable land per capita
- number per area
output: number per area

Q: Q: An ammeter must be connected in series with what to allow it to accurately measure the current flow without causing any disruptions? A:

OPTIONS:
- insulators
- configurations
- capacitors
- resistors

A: resistors

input: OPTIONS:
- nitrogen
- sulfur
- carbon monoxide
- carbon dioxide Now, answer this question: Q: What is the main greenhouse gas causing global warming? A:
A:
output: carbon dioxide

Q: What occurs before the endometrium thickens in estrous cycles? A:

OPTIONS:
- fertilization
- pregnancy
- copulation
- ovulation

Answer: ovulation

Q: Q: What population on earth is already harming the environment due to less resources to go around? A:

OPTIONS:
- whales
- rats
- insects
- humans

A:
humans