Answer:
the answer is six(6)
that's how much is found in living organisms
Ok here we go:
Science starts with observing which leads to hypothesis, which is tested by experiments.
The other two i am not sure of. Hope i was a help to you. One thing you can do to figure out the other two is google: "what type of science includes medicine and envirnmental science", and do the same for the other one.
Earth and Venus have similar sizes. Earth's diameter is 12,756.2 km and Venus' 12,103.6 making Earth's 5% larger.
Their composition is also similar. They both have metal cores, silica rock and thin crust.
Answer:
Catalase is an enzyme in the liver that breaks down harmful hydrogen peroxide into oxygen and water. When this reaction occurs, oxygen gas bubbles escape and create foam.
