Ecosystems

Question 1

Ecosystems

Answer 1

Biological community together with its physical environment

Question 2

Ecosystems include:

Answer 2

primary producers, decomposers and detrivores, dead organic metter, herbivores, carnivores, physical environment

Question 3

Energy is

Answer 3

the capacity to do work by moving matter against an opposite force

Question 4

First Law of Thermodynamics

Answer 4

All energy is conserved. Energy is never destroyed, it is transformed.

Question 5

Second law of thermodynamics

Answer 5

some energy is lost during transformation

Question 6

Entropy is

Answer 6

the transformation of matter and energy to a more random state

Question 7

How is energy captured for use in an ecosystem?

Answer 7

photosynthesis

Question 8

Photosythesis

Answer 8

is the process by which light is converted into energy stored in the form of organic compounds

Question 9

Primary productivity

Answer 9

all energy produced by photosynthesis

Question 10

Biomass

Answer 10

weight of living material. usually expressed as dry weight per unit of area

Question 11

Two phases of photosynthesis

Answer 11

Dark phase, and the light phase

Question 12

Autotrophs

Answer 12

self-feeding organisms (green plants)

Question 13

Chemoautotrophs

Answer 13

organisms that obtain their energy by oxidizing inorganic substances