What wets the skin, and when it evaporates, it cools the body?
Options:
- (A) Heat energy
- (B) salt and water
- (C) acetic acid
- (D) urine
- (E) ice
- (F) Chlorophyll
- (G) white vinegar
- (H) blood
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Let's think first: Sweat wets the skin, and when it evaporates, it cools the body. Sweat is made of salt and water. Water and salt wets the skin, and when it evaporates, it cools the body.... So the answer is [(B)]


What can happen during the reproduction process?
Options:
- (A) tree falls
- (B) Mutations
- (C) Plants growth
- (D) movement
- (E) competition
- (F) adding heat
- (G) contamination
- (H) Dehydration
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Let's think first: Reproduction is the process by which organisms give rise to offspring. Mutations are sources of variations in offspring. Mutations can occur during the reproduction process.... So the answer is [(B)]


Where in a cell are ribosomes located?
Options:
- (A) outside the nucleus
- (B) Most plants
- (C) solid, liquid, gas
- (D) allow growth
- (E) Veins and arteries.
- (F) Earth orbiting the Sun
- (G) Chlorophyll
- (H) the body's largest organ
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Let's think first: Ribosomes are structures in the cytoplasm where proteins are made. Outside the nucleus is cytoplasm. Ribosomes are structures outside the nucleus where proteins are made.... So the answer is [(A)]


What organelles that are found in the cells of mosses.
Options:
- (A) chloroplasts
- (B) epidermal
- (C) sensory neurons
- (D) an organism's body
- (E) more abundant
- (F) Epidermis
- (G) produce light
- (H) it needs them
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Let's think first: Chloroplasts are organelles that are found in the cells of plants and algae. Mosses are nonvascular plants. Chloroplasts are organelles that are found in the cells of mosses.... So the answer is [(A)]


What occurs when muscles contract and propel male gametes?
Options:
- (A) fertilization
- (B) sex
- (C) ejaculation
- (D) electrically
- (E) rapid expansion
- (F) motion
- (G) competition
- (H) intercourse
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Let's think first: Ejaculation occurs when muscle contractions propel sperm from the epididymes. Male gametes are called sperm. Ejaculation occurs when muscle contractions propel male gametes.... So the answer is [(C)]


The total mass of organisms in an environmental stage is called what?
Options:
- (A) food pyramid
- (B) extinction
- (C) ecological pyramid
- (D) food chain
- (E) vegetation
- (F) food
- (G) ligt
- (H) biomass
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Biomass is the total mass of organisms at a trophic level. Each stage is a trophic level. Biomass is the total mass of organisms in an environmental stage.... So the answer is [(H)]