Science Unit 1 Deffinitions

Question 1

Carrying capacity

Answer 1

The amount of animals an ecosystem can hold ( example; to many animal = to little resources

Question 2

Succession

Answer 2

Ecosystems change over time
Succession is a series of gradual changes that result in the replacement of one community of plant and animals by another

Question 3

What types of succession are there and explain them

Answer 3

Primary Succession: An area that never had life before (eg: a lava flow, once cooled creates an area of new rock.
Secondary succession: the first organisms to colonize the area are grasses and wild flowers. The seeds of these plants blow in from other areas near by and decompose, enriching the soil with their nutrients.

Question 4

Draw primary succession

Answer 4

Exposed rocks/lichens and mosses/annual weeds/perennial weeds and grasses/ shrubs/aspen,cherry and young pine forests/ beech and trees

Question 5

Draw secondary succession

Answer 5

Fire/-nothing-0years/annual plants-1-2years-/grasses and perennials-3-4years-/grasses,shrubs,pines,young oak, and hickory/mature oak, and hickory forest/

Question 6

Water cycle

Answer 6

altering landscapes, redirecting rivers, withdrawing water for various uses, and contributing to climate change.

Question 7

Carbon cycle