Variation and The Atmosphere Flashcards
1
Q
What are some examples of genetic variation?
A
- Eye colour
- Blood group
- Attached earlobes
- Animal’s fur colour
2
Q
What are some examples of environmental variation?
A
- Tattoos
- Scars
- Language spoken
- Colour of hydrangea flower - blue in acid soil, pink in alkaline
3
Q
What are some examples of environmental and genetic variation?
A
- Height
- Weight
- Hair colour (can be lightened by the sun)
- Size of plant
4
Q
What are two ways in which woolly mammoth adapted?
A
- Fur keeps them warm in the winter
2. Tusks help them get food through the snow and ice
5
Q
How has our atmosphere changed over time?
A
- Earth formed 4.6 billion years ago from a hot mix of gases and solid
- Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes
- including hydrogen sulphide, methane
- 10 - 200 times as much carbon dioxide as today’s atmosphere.
6
Q
How did carbon dioxide levels decrease in the atmosphere?
A
- Absorbed by oceans
- Used for photosynthesis by plants
7
Q
What do plants fight over?
A
- Water
- Space
- Nutrients from the soil
8
Q
What is the question for efficiency?
A
efficiency = output/input X 100
