Logic of a solution: *Annelids have the amazing capacity to regrow segments that break off. Earthworms Earthworms are in the phylum Annelids. Earthworms have the amazing capacity to regrow segments that break off.*
*(G)*
The original question: *Earthworms have the amazing capacity to regrow segments that:
Options:
- (A) reproduce
- (B) tadpoles
- (C) Loose
- (D) form sand
- (E) are still attached
- (F) allow growth
- (G) break off
- (H) fungal*

Line 1: *Sponges are a source of food for many species of fish. Sponges are also keystone species. Keystone species are a source of food for many fish species.*
*(D)*
Line 2: *What are a source of food for many fish species?
Options:
- (A) layers of fat
- (B) bird species
- (C) human species
- (D) keystone species
- (E) Organic compounds
- (F) barnacles
- (G) gastropod shells
- (H) species of deer*

Logic of a solution: *Ribosomes are sites where proteins are made. Biomolecules covered include amino acids, proteins, enzymes, vitamins and hormones. Ribosomes are sites where biomolecules are made.*
*(B)*
The original question: *Biomolecules are made in where?
Options:
- (A) Power plants
- (B) ribosomes
- (C) Earth
- (D) body water
- (E) loose dirt
- (F) ocean water
- (G) environment
- (H) loose soil*

Line 1: *Cells vary in size as well as shape, but all cells are very small. An embryo is so small that it requires a microscope in order to be seen. A cell requires a microscope in order to be seen.*
*(B)*
Line 2: *What requires a microscope in order to be seen?
Options:
- (A) fungi
- (B) cells
- (C) mildew
- (D) gasoline
- (E) fungus
- (F) matter
- (G) telescopes
- (H) sunlight*

Logic of a solution: *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.*
*(H)*
The original question: *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*

Logic of a solution: *Cells cannot survive without oxygen. Bacteria that require oxygen are aerobic. Cells are aerobic.*
*(E)*
The original question:
*_ are aerobic
Options:
- (A) goats
- (B) plants
- (C) algae
- (D) moss
- (E) cells
- (F) chloroplast
- (G) complex
- (H) humans*