B1.4
- Created by: Meganallam
- Created on: 15-05-17 17:53
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- B1.4
- Adaptations
- to survive and reproduce, organisms require a supply of materials from their surroundings and from the other living organisms there.
- plants compete for: light, space, water and nutrients
- animals often compete for food, mates and territory.
- organisms have adaptations that allow them to survive in the conditions in which they normally live.
- extremophiles are organisms that live in extreme environments.
- they may be tolerant to high levels of salt, high temperatures or high pressure
- a camel has many adaptations.
- the fat is not distributed around the body. this reduces insulation allowing more heat loss.
- a camel can go 3-4 days without food and water.
- fat stored in their humps provide a long term food reserve and a supply of metabolic water.
- they are tall and thin increasing area to volume ratio increasing heat loss by radiation.
- polar bears have many adaptations
- they have thick skin under their fur for insulation.
- they camouflage against the snow.
- there large feet help to distribute their weight as they walk on ice.
- they are compact reducing their surface area to volume ratio reducing heat loss by radiation.
- plants are adapted to live in extreme conditions.
- 1. changes to surface area
- 2. water storage tissue
- 3. extensive root system.
- Environmental Change
- animals and plants are subject to environmental changes.
- these could be living or non-living such as a change in competitor or average rainfall.
- living organisms can be used as indicators of pollution.
- lichens can be used as indicators of the concentration of sulphur dioxide in the atmosphere.
- invertebrate animals can be used as water pollution indicators and are used as indicators for the concentration of dissolved substances in oxygen.
- animals and plants are subject to environmental changes.
- Adaptations
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