Answer:
Explanation:
Organisms have different forms of circulatory systems. Humans have a closed circulatory system, while many mollusks and other invertebrates have an open system. In a closed circulatory system, blood is enclosed within blood vessels.
Answer:
I started out as glucose, got converted to pyruvate, after which I got oxidised by Oxygen to become CO2
Explanation:
My name is CO2, and I started out as glucose from pure honey. I got eaten by a little child when I was two weeks old, and I had to go through the dreadful process of aerobic respiration in the child's body.
My glucose molecules were broken down into pyruvate, and I stayed that way for a while, as I made my way to the mitochondria of the child's cells. Once I got to the mitochondria, I met my old friend oxygen, who reacted with me to turn me into the molecule I am today - C02.
If you want to know how I escaped the child's body, that's easy - I simply snuck out his nose while he was breathing one cold dark night.
There are two things that cause ocean water to become denser, and those are b) the salinity of water and low temperatures.
The more salt there is, the denser the water will be - take the lake Dead Sea in Israel, Jordan, and Palestine for example.
And the lower the temperature, again, the denser the water will be - the deeper you go into an ocean, it will be more difficult to move around due to density and other things.
Electric cars and the renewable energy that create the electricity to charge
them protects environmental quality.
Renewable energy arise from renewable sources such as sunlight, wind etc
and they are always replenished from time to time. This form of energy
doesn't emit compounds such as greenhouse gases thus helping to protect
environmental quality.
Non renewable energy is mostly gotten from fossil fuels which emits carbon
and other compounds . These compounds pollute and reduces
environmental quality.
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