ES Semester Exam Review Unit 3 & 4

An ecosystem contains -

• Air

• Living Things

• Sand

A ________ is a place that contains everything an organism needs.

WORD BANK:

Community, Species, Habitat, Population

A linear sequence in which energy is transferred from one organism to the next?

• Food Chain

• Food Web

An ecosystem gets its energy from the __________

• green plants

• sun

• wind

• soil

 The change in the genetic characteristics in a population from one generation to the next.

• Natural Selection

• Adaptation

• Evolution

• Artificial Selection

The process that causes the characteristics of a population to change in a way controlled by humans.

• Natural Selection

• Adaptation

• Evolution

• Artificial Selection

A trait that increases an organism’s chance of survival.

• Natural Selection

• Adaptation

• Evolution

• Artificial Selection

Process that causes the characteristics of a population to change without human control.

• Natural Selection

• Adaptation

• Evolution

• Artificial Selection

A __________ is a unicellular organisms with cell walls but no nuclei.

WORD BANK:

Fungi, Bacteria, Protists

A ____________ is an organism that help us digest food and break down dead organisms?

• Bacteria

• Protist

• Fungi

• Plants