Lecture IV. Changing climate patterns and human impacts

Question 1

What causes climate change and what are the consequences

Answer 1

greenhouse gases are causing climate change and its consequences are rising temperatures, loss of glaciers, loss of polar sea ice, sea level rise, more severe frequent storms, and ocean acidification

Question 2

What happens as CO2 increases?

Answer 2

temperature is increasing along with CO2 levels

Question 3

What historical event caused the increase in CO2

Answer 3

The industrial revolution, continue to emit a ton of CO2 into the environment

Question 4

What caused the depletion of the atmospheric ozone?

Answer 4

Accumulation of chlorofluorocarbons caused this depletion, which has caused DNA damage in plants, phytoplankton and increased rates of skin cancer and cataracts in humans

Question 5

Practice graphs and figures (will have some questions on the exam on understanding and analyzing graphs)

Answer 5

…

Question 6

What causes biodiversity loss?

Answer 6

Habitat loss, introduced species (invasive species), over-harvesting, and global change

Question 7

What does energy flow through

Answer 7

Energy flows through ecosystems and food chains start with primary production

Question 8

What do food chains start with?

Answer 8

primary production

Question 9

Primary production is limited by ___ in auqatic systems and ____ in terrestrial systems

Answer 9

limited by nutrients and light in aquatic systems & limited by moisture and temp in terrestrial systems

Question 10

What link trophic levels

Answer 10

food chins link trophic levels

Question 11

define primary producers

Answer 11

are at the base of the food chain

Question 12

define detritivores

Answer 12

connect energy from all trophic levels

Question 13

Define trophic levels

Answer 13

The position of organisms in the food chain