5C Environmental Biology

Describe four pieces of evidence for climate change.

Answer explanation

Increasing concentration of carbon dioxide

Changing patterns in temperature records

Analysis of pollen grains from peat bogs

Dendrochronology

Dendrochronology refers to a new .......................... is added each year due to the growth of cambium cells. Width of ring indicates the .............................. and ........................ of that year.

What is anthropogenic climate change?

Answer explanation

Changes in meteorological conditions caused by human activity.

Changes in climate caused by human activity.

For example, deforestation, burning fossil fuels, intensive agriculture

What is a greenhouse gas?

Answer explanation

A gas that absorbs this re-radiated radiation, trapping it in the earth's atmosphere so that it is not lost to space.

Identify the process at A, B, C, D, E, and F

Answer explanation

A - photosynthesis

B - respiration

C - feeding

D - combustion

E - decomposition

F - death / excretion

................... coloured rings are produced during warmer spring and summer month.

.................... coloured rings form during autumn month.

....................... ring formed during rainy season and .................. ring formed during dry season.

Which of the following is not an example of greenhouse gases?

• oxygen

• carbon dioxide

• water vapour

• methane

Define global warming.

Answer explanation

The rise in global temperatures mainly due to the increasing concentrations of greenhouse gases in the atmosphere.

Define climate change.

Answer explanation

increasing changes in the measures of climate over a long period of time, including precipitation, temperature, and wind patterns.