Unit 7

Question 1

apex predator

Answer 1

a predator with no natural enemies

Question 2

biodiversity

Answer 2

having several different species

Question 3

cold wake

Answer 3

the changes in the sunlight layer of the ocean in the aftermath of a hurricane

Question 4

desiccation

Answer 4

drying out

Question 5

food pyramid

Answer 5

an analysis of populations that groups organisms by the level that they occupy in the food chain

Question 6

habitat

Answer 6

the area in which organisms live

Question 6

gauses principle

Answer 6

the theory that species must have slightly different niches to successfully co-exist

Question 7

interference

Answer 7

a type of competition in which one species is better at getting the available resources than the other is

Question 8

intraspecific

Answer 8

competition within species

Question 9

model

Answer 9

representations of ideas that scientists use to explain the complex interactions

Question 10

niche

Answer 10

the role an organism plays within an ecosytem

Question 11

population cycles

Answer 11

the natural periods when a population increases or decreases

Question 12

trophic cascade

Answer 12

a change in population that impacts three or more levels in the food pyramid

Question 13

trophic level

Answer 13

the level on a food pyramid shared by species with similar roles