Functions of blood:
1. Blood carries oxygen from and carbon dioxide to lungs, nutrients from guts, urea from the liver.
2. It contains anti-bodies, hormones, haemoglobin and many other substances.
3. It distributes heat around the body.
<span>This
is because changes on the planet are slow and take long periods of time (geological
times) for observable changes to be noticed by humans. While the earth looks
static, it is dynamic and can be shown by a time-lapse camera put in a location
such as a tectonic boundary</span>
Answer:
A Cellular Respiration
Explanation:
This is because Photosynthesis takes CO2 and pushes our Oxygen, while the inverse is true for cellular respiration.
Answer:
The correct answer is option (d)-"All of these are found in the fossil record and have been used by scientists to understand human evolution".
Explanation:
There is plenty of evidence that supports the proposal of how humans has evolved during past times. The fossil records that scientists has used understand human evolutionary patterns include the following. Ardipithecus ramidus bones that revealed advances in upright walking, even tough they had a small brain that measured between 300 and 350 cm3. Australopithecus lack of an opposable big toe suggest that they lived on the ground instead of in trees. Homo erectus was the first species to use and control fire, as suggested by evidence of microscopic traces of wood ash.
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