More Semester 1 Exam

Question 1

What is mutualism and give an example

Answer 1

Both organisms benefit from the relationship

example) fungus and algae in a pond

Question 2

What is commensalism and give an example

Answer 2

One organism benefits and the other is unharmed

Example) Treefrog using tree to protect it from rain

Question 3

What is parasitism and give an example

Answer 3

One organism benefits and the other is harmed

Ex) lice

Question 4

What is primary succession and give an example

Answer 4

Succession or making of a community somewhere that was previously baron with no life

Ex) Bare rock or sand dunes

Question 5

What is secondary succession and give an example

Answer 5

A community replaces another that had gotten destroyed but not fully

Ex) Forest fire

Question 6

What are the major threats to biodiversity

Answer 6

Population growth, resource consumption, climate change/global warming
Deforestation and habitat loss, by catch, invasive species, pollution

Question 7

What is exponential growth

Answer 7

The rate becomes ever more rapid in proportion to the growing total number or size
Goes straight up

Question 8

What is logistic growth

Answer 8

Growth rate decreases as the population reaches carrying capacity

Question 9

What is carrying capacity and what are limiting factors that keep the population from growing

Answer 9

S shaped graph

Lack of resources, competition for resources, not enough space, overpopulation of an animal

Question 10

What are six ways humans negatively impact the environment

Answer 10

Global warming, Deforestation, ozone depletion, invasive species, exotic pet trade, by catch

Question 11

How is balance achieved in an ecosystem

Answer 11

The birth and death rates are equal to each other

Question 12

What is the cause of acid rain

Answer 12

the mixing of moisture in the atmosphere with sulfur dioxide and nitrous oxides, forming sulfuric acid and nitric acid in the precipitation that falls to the earth.
-pollution humans put into the atmosphere

Question 13

How many total atoms are found in glucose

C6H12O6

Answer 13

24

Question 14

Describe how carbon can both leave and enter the atmosphere

Answer 14

It is released into the atmosphere through burning of fossil fuels and respiration

The ocean and other big bodies of water soaks up carbon from the atmosphere and photosynthesis