Fact 1: Biodiversity increases the productivity and stability of ecosystems. Fact 2: Biodiversity is basically genetic diversity. Given the two facts above, what increases the productivity and stability of ecosystems?
OPTIONS:
- Fully cooking the oysters
- genetic uniformity
- genetic diversity
- extinction
- agriculture
- disease
- Earth orbiting the Sun
- recycling

Answer: genetic diversity

Fact 1: Oncogenes promote the division of cells with damaged DNA. Fact 2: DNA DNA DNA is a person's genetic fingerprint. Given the two facts above, oncogenes promote the division of cells with damaged what? ?
OPTIONS:
- Veins and arteries.
- biological diversity
- Something with a head, thorax, and abdomen
- a hemisphere is tilted away from the sun
- Addition
- Person's genetic fingerprint
- Mathematics division
- Cell phones

Answer: Person's genetic fingerprint

Fact 1: Cycles of freezing and thawing water cause ice wedging. Fact 2: Ice wedging is the most important form of mechanical weathering. Given the two facts above, freezing and thawing cause what type of weathering?
OPTIONS:
- loose soil
- climate
- mechanical
- flooding
- Sediment
- rivers
- Metling snow
- Winter

Answer:
mechanical