Most people can survive only a few days without what?
Options:
- (A) carbon dioxide
- (B) oxygen
- (C) h2o
- (D) H20
- (E) NaCl
- (F) CO2
- (G) soda
- (H) urea
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Let's think first: Most people can survive only a few days without water. Water is everywhere H20. Most people can survive only a few days without H20.... So the answer is [(D)]

What is a major route of removing wastes from the body?
Options:
- (A) Detoxifying teas
- (B) Feces
- (C) Burping
- (D) Essential Oils
- (E) glucose
- (F) sodium
- (G) NaCl
- (H) rivers
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Let's think first: Excretion is the process of removing wastes and excess water from the body. Major route of excretion is in the feces. Feces are a major route of removing wastes and excess water from the body.... So the answer is [(B)]

Where does dna reside?
Options:
- (A) membrane
- (B) cells
- (C) embryos
- (D) atom
- (E) complex
- (F) nucleotide
- (G) ligt
- (H) retina
--
Let's think first: DNA is found in chromosomes. Genes live on chromosomes, chromosomes live in cells. DNA is found in cells.... So the answer is [(B)]

Cartilage is a tough tissue made up of:
Options:
- (A) a cuticle
- (B) bones
- (C) Joules
- (D) neurons
- (E) the skin
- (F) loose soil
- (G) fibrils
- (H) muscle
--
Let's think first: Cartilage is a tough tissue that contains a protein called collagen. Many collagen fibrils come together and form a collagen and forma collagen fiber. Cartilage is a tough tissue made up of fibrils.... So the answer is [(G)]

Chromosomes contain genes, which code for
Options:
- (A) Most plants
- (B) Plants growth
- (C) body tissue
- (D) Animal survival
- (E) animals
- (F) Chemical energy
- (G) peachleaf willow
- (H) A Greek letter
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Let's think first: Chromosomes contain genes, which code for proteins. Protein builds and repairs body tissue. Chromosomes contain genes, which code for body tissue.... So the answer is [(C)]

What live in social groups called prides?
Options:
- (A) insects
- (B) animals
- (C) Pride parades
- (D) humans
- (E) Social networks
- (F) fur seals
- (G) Leo's symbol
- (H) Social circles
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Let's think first: Lions live in social groups called prides. Leo's symbol is the lion. Leo's symbols live in social groups called prides.... So the answer is [(G)]