What does goldenrod life cycle include?
Options:
- (A) it keeps an organism warm
- (B) sub-units of species
- (C) produce offspring
- (D) seed dispersal
- (E) The flowers are pollinated
- (F) alternation of generations
- (G) that material's properties
- (H) biological diversity
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Let's think first: All plants have a characteristic life cycle that includes alternation of generations. Goldenrod is a plant that generates activity. Goldenrod life cycle includes alternation of generations.... So the answer is [(F)]

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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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)]

Genes can be what on something wonderful?
Options:
- (A) singing
- (B) ligt
- (C) vacationing
- (D) exploded
- (E) fertile
- (F) good
- (G) positive
- (H) located
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Let's think first: Genes that are located on the same chromosome are called linked genes. Chromosomes and Chromosome Links Chromosomes are wonderful. Genes can be located on something wonderful.... So the answer is [(H)]

What is a positive effect of plant needs for water and minerals from soil?
Options:
- (A) erosion prevention
- (B) reducing acid rain
- (C) It helps them survive
- (D) agriculture
- (E) nutrient deficiency
- (F) water run-off
- (G) erosion
- (H) Exfoliation
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Let's think first: Most plants grow roots down into the soil to absorb water and minerals. Plant roots begin to stabilize the soil against erosion. The need for plants to absorb minerals and water from the soil also leads to them preventing soil erosion.... So the answer is [(A)]

What do organisms in the lowest trophic level use as food?
Options:
- (A) Organic compounds
- (B) food and shelter
- (C) heat energy
- (D) Chemical energy
- (E) Chlorophyll
- (F) members of their own species
- (G) scarce resources
- (H) inorganic molecules
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Let's think first: Producers make food from inorganic molecules. Primary producers make up the lowest trophic level. The lowest trophic level makes food from inorganic molecules.... So the answer is [(H)]

_ lack respiratory and excretory systems.
Options:
- (A) graptolites
- (B) insects
- (C) ferns
- (D) barnacles
- (E) fossil fuels
- (F) Allergies
- (G) starfish
- (H) parasites
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Let's think first: Echinoderms lack respiratory and excretory systems. Echinoderms are represented by the starfish. Starfish lack respiratory and excretory systems.... So the answer is [(G)]