What do all chemical changes require to occur?
Options:
- (A) during the day
- (B) heating liquids
- (C) Activation energy
- (D) wavelengths and photons
- (E) Burning fuel and air
- (F) kinetic energy
- (G) electromagnetic energy
- (H) direct energy
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Let's think first: All chemical reactions require activation energy to get started. Chemical changes are a result of chemical reactions. All chemical changes require activation energy to occur.... So the answer is [(C)]


What is the average weather in a place over time?
Options:
- (A) mild
- (B) Summer
- (C) deserts
- (D) acclimate
- (E) seasons
- (F) climate
- (G) temperature
- (H) climatic
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Let's think first: Climate is the average weather in an area over a long period of time. Eilat is the safest place in the area. Climate is the average weather in a place over a long period of time.... So the answer is [(F)]


This process is always more complex in eukaryotes than prokaryotes
Options:
- (A) eukaryotic infection
- (B) mitosis
- (C) kinetic
- (D) movement
- (E) breathing
- (F) recycling
- (G) photosynthesis
- (H) relocation
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Let's think first: Cell division is more complex in eukaryotes than prokaryotes. Mitosis is cell division. Eukaryotes have more complex mitosis than prokaryotes.... So the answer is [(B)]


What type of trunk does evergreen usually have?
Options:
- (A) oak
- (B) greenwood
- (C) woody
- (D) bark
- (E) hollowed
- (F) Spruce
- (G) spiny
- (H) bent
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Let's think first: Most modern gymnosperms are trees with woody trunks. Gymnosperms are the plants that are known as evergreens. Evergreens are mostly trees with woody trunks.... So the answer is [(C)]


What do mollusks have?
Options:
- (A) aerobic capacity
- (B) Energy
- (C) gastropod shells
- (D) Chemical energy
- (E) a cuticle
- (F) kinetic energy
- (G) soft bodies
- (H) alveoli
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Let's think first: Mollusks are invertebrates such as the common snail. Mollusks are soft-bodied invertebrates. Mollusks, like the snail, are soft-bodied.... So the answer is [(G)]


What kind of animal sometimes gets hiccups?
Options:
- (A) mammals
- (B) fur seals
- (C) fish
- (D) goats
- (E) humans
- (F) insects
- (G) worms
- (H) dogs
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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: Mammals breathe with the help of a diaphragm. Hiccups are a result of spasms of the diaphragm. Mammals sometimes get hiccups.... So the answer is [(A)]