Question

study guide
1, benefits from the ecosystem are called...
a, ecosystem services
b, ecosystem resilience
c, humanities
c, natural services
2, (primary / secondary) succession is when an ecosystem recovers after being partially destroyed. (primary / secondary) succession is when a new ecosystem develops on unoccupied land.
3, biodiversity helps with... (select 3)
a, development of medicine
b, survive/resist change
c, agriculture
d, extinction
4, plants and animals that look very similar to each other have...
a, high genetic diversity
b, clones
c, low genetic diversity
d, parasites
5, match each type of symbiosis to its effect
a, mutualism
b, parasitism
c, commensalism
_one species benefits the other is unaffected
_one species benefits the other also benefits
_one species benefits the other is harmed
6, a species that helps maintain the ecosystem for other species is a...
a, lockstone species
b, keystone species
c, centerstone species
d, cornerstone species
7, where a species lives and how it gathers resources is its
a, habitat
b, cornfield
c, ecosystem
d, niche
8, (density / distribution) is how many individuals there are in an area, (density / distribution) is how those individuals are spaced out or organized in the area.

Explanation:

1. Ecosystem Services are the benefits people obtain from ecosystems.
2. Secondary succession occurs when an ecosystem recovers after being partially destroyed. Primary succession happens when a new ecosystem develops on unoccupied land.
3. Biodiversity helps with the development of medicine (many drugs come from natural sources), survival/resist change (more diverse ecosystems are more stable), and agriculture (diverse crops and pollinators).
4. Plants and animals that look very similar to each other have low genetic diversity (less variation in their genes).
5. Mutualism: One species benefits and the other also benefits. Parasitism: One species benefits and the other is harmed. Commensalism: One species benefits and the other is unaffected.
6. A keystone species helps maintain the ecosystem for other species.
7. Where a species lives and how it gathers resources is its niche.
8. Density is how many individuals there are in an area. Distribution is how those individuals are spaced out or organized in the area.

Answer:

1. d. Natural Services (assuming it's a typo for Ecosystem Services)
2. Secondary; Primary
3. a, b, c
4. c
5. a - One species benefits the other also benefits; b - One species benefits the other is harmed; c - One species benefits the other is unaffected
6. b
7. d
8. Density; Distribution