chapter 10

Question 1

all the living things and nonliving things in a given area.

Answer 1

ecosystem

Question 2

a nonliving thing in a ecosystem.

Answer 2

abiotic factor

Question 3

a living or once living thing in an ecosystem.

Answer 3

biotic factor

Question 4

the place within an ecosystem where an organism lives; provides the biotic and abiotic factors an organism needs to survive and reproduce.

Answer 4

habitat

Question 5

all the organism of same species that that live in the same area at the same time.

Answer 5

population

Question 6

all the populations livivg in an ecosystem at the same time.

Answer 6

community

Question 7

the size of a population compared to the amount of space available.

Answer 7

population density

Question 8

the way a species interacts with abiotic and biotic factors to obtain food, find shelter, and fufill other needs.

Answer 8

niche

Question 9

the demand for resources, such as food, water, and shelter, inshort supply in a community.

Answer 9

competition

Question 10

condition that occurs when a population becomes so large that it causes damage to the enviroment.

Answer 10

overpopulation

Question 11

the act of one organism, the predator, feeding on another organism, its prey.

Answer 11

predation

Question 12

a close, longterm relationship between two species that usually involves an exchange of food or energy.

Answer 12

symbiosis

Question 13

a symbiotic relationship in which both organisms benefit.

Answer 13

mutualism

Question 14

a sybiotic relationship that benefits one species but does not harm or benefit the other.

Answer 14

commensalism

Question 15

a sybiotic relationship in which one organism benefits and the other is harmed.

Answer 15

parasitism

Question 16

an organism that uses an outside energy source, such as the sun, and produces its own food.

Answer 16

producer

Question 17

an organism that cannot make its own food and gets energy by eating other organisms.

Answer 17

consumer

Question 18

a model that shows how energy flows in an ecosystem through feeding relationships.

Answer 18

food chain

Answer 19

food web