Biodiversity

Question 1

Define genetics

Answer 1

The diversity in the gene pool of a given species

Question 2

Define species

Answer 2

The variety of life present in the community

Question 3

Define ecosystem

Answer 3

A biological community of interacting organisms and their physical environment

Question 4

Define biodiversity

Answer 4

Variety of life forms on the planet

Question 5

Factors that impact biodiversity

Answer 5

Modified land usage: agricultural expansion, forestry, urban spaces.
Introduced species: predators, weeds, competition, disease.
Climate change: ocean acidification, changed weather patterns(temperature, rainfall, wind), migration.
Habitat destruction: land clearing, fire.

Question 6

Draw the ecosystem model for urban, agricultural and agricultural

Answer 6

Check in folder if correct :)

Question 7

Define energy

Answer 7

The ability to do work, doesn’t occupy space or have mass

Question 8

Define matter

Answer 8

The substance of physical objects, occupies space and has mass.
Matter is a vehicle for energy.

Question 9

Organic molecules

Answer 9

Contain hydrogen and carbon, can be burnt.

Question 10

Inorganic molecules

Answer 10

Chemical compound that is not organic.

Question 11

What communities are the most stable?

Answer 11

Stability greater in natural communities, lesys in agricultural and even less in urban.

Question 12

Define productivity

Answer 12

The amount of production over a given amount of time

Question 13

How to measure productivity

Answer 13

By the amount of biomass produced in the community

Question 14

What ecosystems are the most productive?

Answer 14

Natural, then agricultural, then urban.

Question 15

Biotic factors that affect productivity

Answer 15

Hunting
Disease
Pests
Introduced species
Competition
Loss of habitat

Question 16

Abiotic factors that affect productivity

Answer 16

Drought
Natural disasters
Climate
Sunlight
Nutrient levels

Question 17

Define succession

Answer 17

The progressive replacement of dominant species/community in an ecosystem until a stable climate is reached.
Climax communities are stable communities.

Question 18

Define primary succession

Answer 18

Ecological succession of plant life in an area that is devoid of vegetation and usually lacking soil, such as lava flow.

Question 19

Define secondary succession

Answer 19

Occurs in an area which has previously supported vegetation before an ecological disturbance from smaller things such as floods, hurricanes or tornadoes.