unit 2
In what year was the Clean Water and Air Act created?
1948
Cultural
True or false forest restore/increase CO2 levels
FALSE
Where are savannas typically found
Africa, Australia and South America
A wetland with woody plants, saturated/slow moving water and a lack of oxygen in the soil can be described as a __________.
Swamp
Which of the following is known to cause primary succession?
Glacier movement and volcanoes
Which habitat would heavy grazers and burrowing animals most likely be found?
Grasslands
What is an invasive species cause soil erosion, destroy young trees and consume seeds and nuts necessary for new growth?
Feral Hog
How much of the Earth’s land surface is covered with grasslands?
20%-40%
Levees are most commonly used for which of the following?
Stopping water from naturally changing course
describe respiration?
intake of oxygen to convert glucose to energy
What percentage of fresh water is trapped in glaciers or underground aquifers?
99%
What are the most common trees in a boreal forests?
Coniferous
What are two threats which plagues grasslands today?
urban sprawl
climate change
unsustanible agriculture
Which year was the Duck Stamp Act enacted?
1934
Where is the phosphorus cycle primarily conducted?
Soil and plants
What percent of earth is covered by rainforest
6%
Which of the following acts encouraged settlers to move west and provided free acreage to those who made the journey?
Homestead act
Tillage is primarily used for
Control weeds and aerate soil
Which president enacted the Farm Bill?
What are the two positive ecological interactions between organisms.
mutualism and commensalism
Evergreen trees describe this forest
Taiga
what are the forest layers in the correct order, from the lowest point as 1 and the highest point as 5.
forest floor, herb layer, shrub layer, understory layer, canopy
Which of the following is the specific mission of the Natural Resources Conservation Service
To conserve soils for agricultural production
Two factors in which a wetland is classified