Ecology study guide

Question 1

All the biotic and abiotic factors in a marsh

Answer 1

Ecosystem

Question 2

Inspections on fruit being brought into the country are done because

Answer 2

people are worried that insects will come in and will wreck ecosystems

Question 3

Why does the ocean not lose water when water is evaporated and then it rains?

Answer 3

Because the water still winds up in the ocean and does not leave the atmosphere

Question 4

What does the water cycle do other than balancing the water in an ecosystem?

Answer 4

regulates weather patterns and transports nutrients and sediments

Question 5

What is the principal means by which oxygen is taken from the air and when it it restored to the air?

Answer 5

humans breathe in oxygen and then plants take the Co2 and turn it into oxygen

Question 6

Other way oxygen is removed from air

Answer 6

decomposition of matter

Question 7

Other way that oxygen is replenished in the air

Answer 7

Cellular Respiration

Question 8

What human activities worry global warming scientists?

Answer 8

The use of fossil fuels and factories

Question 9

Is human produced global warming going on now?

Answer 9

Yes, but only a small percentage

Question 10

What is nitrogen fixation and what organisms do that?

Answer 10

the transformation of unusable nitrogen to usable on Earth, legumes

Question 11

How does nitrogen get back into the atmosphere?

Answer 11

Bacteria

Question 12

Where is phosphorus found and how is it released?

Answer 12

it is found in the earth’s crust and it is released by erosion and pressure

Question 13

The erupting of a volcanoes can result in what?

Answer 13

succession

Question 14

What is the area occupied by a population called?

Answer 14

geographic distribution

Question 15

What is the maximum number of organisms that an ecosystem can support?

Answer 15

carrying capacity

Question 16

Density-independent limiting factors include

Answer 16

forest fires and volcanic eruptions

Question 17

Difference between an organisms habitat vs. its niche

Answer 17

an organisms habitat is what it lives in and its niche is its role that it plays in the habitat

Question 18

Main types of terrestrial biomes

Answer 18

rain forests, savannas, deserts, grasslands, taiga, and tundra

Question 19

Main types of aquatic biomes

Answer 19

rivers, seas, oceans, estuaries, coral reefs, wetlands, mangroves, and intertidal zones

Question 20

What is the competitive exclusion principle?

Answer 20

when to species occupy the same niche in a habitat