Science chapter 18

Question 1

The study of interactions of living organisms with one another and with their environment.

Answer 1

Ecology

Question 2

Describes living factors in the environment.

Answer 2

Biotic

Question 3

Describes the no living part of the environment, including water, rocks, light, and temperature.

Answer 3

Abiotic

Question 4

A group of organisms of the same species that live in a specific geographical area.

Answer 4

Population

Question 5

All the populations of species that live in the same habitat and interact with each other.

Answer 5

Community

Question 6

A community of organisms and their abiotic environment.

Answer 6

Ecosystem

Question 7

The part of the earth where life exists.

Answer 7

Biosphere

Question 8

An organism that eats only plants.

Answer 8

Herbivore

Question 9

An organism that eats animals.

Answer 9

Carnivore

Question 10

An organism that eats both plants and animals.

Answer 10

Omnivore

Question 11

The pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms.

Answer 11

Food chain

Question 12

A diagram that shows the feeding relationships between organisms in an ecosystem.

Answer 12

Food web

Question 13

A triangular diagram that’s hows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain.

Answer 13

Energy pyramid

Question 14

The largest population that an environment can support at any given time.

Answer 14

Carrying capacity

Question 15

An organism that is killed and eaten by another organism.

Answer 15

Prey

Question 16

An organism that eats all or part of another organism.

Answer 16

Predator

Question 17

A relationship in which two different organisms live in close association with each other.

Answer 17

Symbiosis

Question 18

A relationship between two species in which both species benefit.

Answer 18

Mutualism

Question 19

A relationship between two organisms in which one organism benefits and the other is unaffected.

Answer 19

Commensalism

Question 20

A relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed.

Answer 20

Parasitism

Question 21

The evolution of two species that is due to mutual influence, often in a way that makes the relationship more beneficial to both species.

Answer 21

Coevolution