Q: Rather than being dead, dry, and brittle, what support structures of the human body consist of living tissues and are supplied with blood and nerves? Choices: - lungs - feet - hearts - bones A:
bones

Q: The adrenal cortex directly influences the function of what organs through the production of the hormone aldosterone to stimulate sodium reabsorption? Choices: - lungs - heart - tumors - kidneys A:
kidneys

Q: Q: Habitat loss, introduced species, overharvesting, and global change are major threats to what? Choices: - the earth's gravity - the sun - transportation - biodiversity A:
A: biodiversity

Question: Q: What is the name of the smallest planet in our solar system, which is also nearest to the sun? Choices: - mars - jupitor - earth - mercury A:
Answer: mercury

*Question*
Q: Hydrocarbons in which all carbons are connected by single bonds are called? Choices: - acids - enzymes - lipids - alkanes A:
**Answer**
alkanes

Q: What is the"packet" of energy called that the nucleus emits during gamma decay? Choices: - transient particle - radioactive particle - ultraviolet particle - gamma particle A:
gamma particle