What live mainly in shallow coastal waters?
Options:
- (A) Sea species
- (B) Coast guards
- (C) animals
- (D) Live Whales
- (E) Shallow people
- (F) fur seals
- (G) a fish
- (H) parasites
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Let's think first: Marine species live mainly in shallow coastal waters. Marine Science Marine science is the study of the sea. Sea species live mainly in shallow coastal waters.... So the answer is [(A)]

What enables bones to perform movement?
Options:
- (A) contraction
- (B) Energy
- (C) sensory neurons
- (D) looseness
- (E) Chemical energy
- (F) Vibrates
- (G) fur and fat
- (H) layers of fat
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Let's think first: Muscles can only contract. Bones work with muscles to perform movement. Contraction enables bones to perform movement.... So the answer is [(A)]

The protective covering on mammals, that helps them conserve body heat, is usually:
Options:
- (A) spiny
- (B) scaley
- (C) elastic
- (D) dense
- (E) fuzzy
- (F) skin
- (G) spiky
- (H) fat
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Let's think first: Mammals conserve body heat with their hair or fur. Mammals Hair or fur covers the bodies of most mammals. Mammals conserve body heat with their fuzzy, protective covering.... So the answer is [(E)]

The two-chambered heart of some backboned aquatic animals is part of their:
Options:
- (A) aerobic capacity
- (B) three-chambered heart
- (C) biological diversity
- (D) it keeps an organism warm
- (E) the body's largest organ
- (F) circulatory system
- (G) salmon
- (H) swimming system
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Let's think first: Fish have a circulatory system with a two-chambered heart. Fish are backboned aquatic animals. Some backboned aquatic animals have a circulatory system with a two-chambered heart.... So the answer is [(F)]

Female gametophytes produce eggs inside what part of flowers?
Options:
- (A) Petal.
- (B) an area swollen with pus
- (C) allow growth
- (D) at or near the margins
- (E) Produce department.
- (F) Chlorophyll
- (G) Chicken.
- (H) Where ovum, are stored
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Let's think first: Female gametophytes produce eggs inside the ovaries of flowers. Ovum, or eggs, are stored in the ovaries. Female gametophytes produce eggs inside where ovum, or eggs, are stored of flowers.... So the answer is [(H)]

What might have an envelope of proteins and enzymes?
Options:
- (A) fur seals
- (B) some viruses
- (C) Most plants
- (D) a fish
- (E) animal transport
- (F) animals
- (G) chickens
- (H) it needs them
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Let's think first: Some viruses have an envelope of phospholipids and proteins. Phospholipases are the enzymes that degrade phospholipids . Some viruses have an envelope of enzymes and proteins.... So the answer is [(B)]