15.5 – Estuaries And Freshwater Ecosystems

Question 0

an_is a partially enclosed body of water. It is a mixture of_water with salt water and two examples are the Chesapeake Bay and the_bayous

Answer 0

1. estuary
2. fresh
3. Louisiana

Question 1

_Are dynamic environments where rivers flow into the ocean

Answer 1

estuaries

Question 2

estuaries are_productive ecosystems

Answer 2

highly

Question 3

_And_share common features

Answer 3

ponds and lakes

Question 4

_Bodies of water are divided into three zones what are they?

Answer 4

1. freshwater

2. littoral, limnetic(pelagic), benthic

Question 5

all Lakes_periodically

Answer 5

turnover

Question 6

a_is a region of land that drains into a river, a river system, or another body of water

Answer 6

watershed

Question 7

what is the littoral zone?

Answer 7

similar to the oceanic intertidal zone, located between high and low watermarks along the shore. Water is well lit, warm, and shallow

Question 8

what is the limnetic zone?

Answer 8

Open water located further out from shore

Question 9

what is the benthic zone?

Answer 9

A lake or pond bottom, where less sunlight reaches. Decomposers live in the sand and dirt here

Question 10

_Ecosystems include estuaries as well as flowing and standing water

Answer 10

freshwater

Question 11

estuaries provide a home for many species and also_migration and_grounds

Answer 11

1. birds

2. spawning

Question 12

estuaries are primarily threatened by_development

Answer 12

land

Question 13

_Provide a home for many features and they_dirty water and renew_water supply

Answer 13

1. wetlands
2. filter
3. underground

Question 14

some animals have_suited to the freshwater they inhabit

Answer 14

adaptations

Question 15

turnover in lakes happen due to changes in_

Answer 15

density

Question 16

and both_and_, surface water flows downward and bottom water flows upward

Answer 16

autumn and spring

Question 17

when a lake turns over what does it bring up?

Answer 17

nutrients