Lecture 5.5

Question 1

A type of community found in many places on earth
Deserts of the world
Rainforests of the world

Answer 1

Biomes

Question 2

Our book identifies __ different biomes of the world

Answer 2

14

Question 3

Determines what organisms are present in an area
Determines what plants/vegetation is there
The vegetation determines what animals are there

Answer 3

Climate

Question 4

our source of life and heat

Answer 4

The sun

Question 5

The rays of the sun hit the earth and some of the heat warms the

Answer 5

atmosphere

Question 6

As you go up in elevation there is a

Answer 6

natural cooling process

Question 7

Not straight relative to our orbit around the sun
Part of the year the northern hemisphere is more towards the sun and the other part of the year it is away from the sun – this gives us our seasons

Answer 7

Earth’s axis

Question 8

It is warmer at the equator 0 degrees
Air is warmest in the middle and warm air tends to rise
The warm air flows up an down 30 degrees north and 30 degrees south

Answer 8

Sunbeams

Question 9

Cool air cannot hold as much water as warm air

When the air goes upwards and cools off, it rains on the equator

Answer 9

Rainfall

Question 10

The air at 30 degrees north and 30 degrees south is cooler and dryer and there are ___ here

Answer 10

deserts

Question 11

A climate on a smaller scale

Climate on a very localized scale

Answer 11

Microclimates

Question 12

Areas beyond where trees grow

Answer 12

Tundra

Question 13

North/south of a particular latitude where no trees grow

Answer 13

arctic tundra

Question 14

Above a certain altitude where no trees grow

Answer 14

alpine tundra

Question 15

Arctic and alpine tundras combined make up __ % of our land area

Answer 15

20

Question 16

Hypothesis concerning timberline

Why do trees stop growing?

Answer 16

1. Excessive light
2. Not enough carbon dioxide / carbon dioxide partial pressure
3. Snow depth/ too much snow in the arctic and alpine
4. Wind- it is clearly windier, trees grow crookedly in presence of strong winds*
5. Heat deficiency, not enough warmth to grow enough*
6. Length of the growing season = very short/ripening of twigs (able to go dormant)*

Question 17

Intensity
Solar radiation
Temperature
Precipitation
Wind
Soil frost activity
Depth of soil thaw

Answer 17

Environment

Question 18

List the four adaptations of animals

Answer 18

Hibernation
Microenvironments
Stay out and tolerate
Migration

Question 19

What is the example of a creature in its microenvironment mentioned in lecture

Answer 19

Lemmings- go under the snow where they are right against the vegetation

Question 20

List the adaptations of plants

Answer 20

Perennially
Size: most are very small
Growth rate: fast
Reproduction: sexually and asexually
Dormancy
Hairs
Heliotropism: flower of the plant follows the sun