Fresh and Saltwater Systems: Checkpoint 7/8

Question 1

What is diversity?

Answer 1

The variety of different species in an ecosystem, may also be used to describe variety in a population or species.

Question 2

What are the different lake zones?

Answer 2

(Little Lime Eats Poop)

Littoral, limnetic, Euphotic, Profundal

Question 3

What are the different ocean zones?

Answer 3

(Ice Cream Operation)
Intertidal, Continental Shelf, Oceanic Zone

There is also the zone of light penetration and the zone of no light penetration

Question 4

True of False: 2/3 of most organisms on Earth spend the majority of their life in salt water!

Answer 4

True

Question 5

What is an estuary?

Answer 5

The end of a river whereby the fresh water of a river begins to mix with salt water of an ocean - this mix is called brackish water (in between salty and fresh water)

Question 6

What is an adaptation?

Answer 6

Physical characteristics or behaviour of a species that increases the species’ chance of survival in a particular environment.

Question 7

What are the main enviromental factors that lead to adaptations? List at least three.

Answer 7

Temperature
Light
Pressure
Salinity
Water movement

Question 8

What is a population?

Answer 8

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

Question 9

What is a community?

Answer 9

Populations of different species living in the same area (biotic component of an ecosystem)

Question 10

A change in population could mean what three things?

Answer 10

An increase or decrease in total population, A change in the number of males versus females, A change in the number of young versus old organisms.

Question 11

WHat are the three major types of changes?

Answer 11

Seasonal Changes, Short-term changes, Long-term changes.