GSS Quiz 2.4 - Nutrient Cycles

Question 1

Plants and animals return nitrogen compounds to soil through ___________________.

Answer 1

waste and decomposition

Question 2

What role do plants play in the carbon cycle?

Answer 2

Plants both use CO2 from the atmosphere and release CO2 into the atmosphere.

Question 3

__________________ is when liquid water turns to gas. This occurs when the water is ________________.

Answer 3

evaporation (vaporization), heated

Question 4

A massive toxic spill kills off half the population of photosynthetic plankton in the ocean. What do you predict may happen to the atmosphere as a result of this event?

Answer 4

The amount of oxygen in the atmosphere would decrease.

Question 5

the bunny

Answer 5

(#1) Sunlight
(#2 + 3) Glucose + Oxygen
(#5 + 6) Carbon Dioxide + Water
(#4) Heat energy

Question 6

Put the terms in the correct order for how the water cycle moves ocean water to water in rivers.

Answer 6

Evaporation

Question 7

____________________ is the main source of phosphorous compounds to an ecosystem.

Answer 7

Rock weathering

Question 8

Plants absorb phosphorus through their __________ and animals obtain it from _______________.

Answer 8

roots; food

Question 9

Phosphorus is an important component of which of the following? (check all that apply)

Answer 9

all 3

Question 10

When the water gets heavy enough it falls back to the earth, this is called _____________________.

Answer 10

precipitation

Question 11

Through which process could a field mouse obtain nitrogen?

Answer 11

by eating grass