Chapters 1-3

Question 1

Dynamic Equilibrium

Answer 1

A system where changes occur but the components of that system have the ability t respond to those changes without disturbing the system - humans affect the equilibrium

Question 2

The biosphere

Answer 2

Where earth is found on earth- lithosphere, hydrosphere and atmosphere

Question 3

Indicator species

Answer 3

Sensitive to environmental changes- Frogs are idicator species because they are sensitive and have two forms and are apart of two food chains

Question 4

Biodiversity

Answer 4

An ecosystem with a large variety of populations is diverse

Question 5

Why are frogs dissapearing?

Answer 5

Loss of habitat (wetlands), Air and water quality ( pollution and acid rain) Climate change, UV radiation and increased tempuratures

Question 6

Producer

Answer 6

Convert energy from the sun or chemicals into food

Question 7

Consumer

Answer 7

Eat what is made by the producer

Question 8

Primary consumer

Answer 8

Relies on an autotroph for its source of energy and is relied on by a secondary consumer (herbivores) - On the 2nd trophic level

Question 9

Secondary consumer

Answer 9

Relies on the primary consumer for food source and is relied on by the tertiary consumers (carnivores) - on the third trophic levle

Question 10

What comes next after secondary consumers?

Answer 10

Tertiary, quaternary, apex

Question 11

Autotrophs

Answer 11

Make their own food ( producers)

Question 12

Heterotroph

Answer 12

Rely on food from other sources

Question 13

Food webs

Answer 13

Interconnected food chains - stable ecosystems have complex food webs

Question 14

Chemoautotrophs

Answer 14

create food with the use of chemicals

Question 15

What percentage of energy gets passed on from one trophic level to another trophic level?

Answer 15

Only 10%

Question 16

What types of pyramids are used for energy levels?

Answer 16

Pyramid of numbers, Pyramid of Biomass, Pyramid of energy

Question 17

Water Cycle

Answer 17

Describes the cycling of water through evaporation or transpiration and or precipitation

Question 18

Carbon cycle

Answer 18

Describes the flow of carbon from the atmosphere (CO2) into an ecosystem by photosynthesis, and back to the atmosphere through cellular respiration

Question 19

Nitrogen cycle

Answer 19

Requires nitrogen gas to be converted into nitrates, the usable form for nitrogen for living organisms

Question 20

Phosphorous cycle

Answer 20

Has two parts- Longer term: Phosphorou in the earths crust Short term: Living organisms

Question 21

What affects the speed at which nutrients are recycled through an ecosystem?

Answer 21

OXygen levels, tempurature, BIodiversity and water.