D) oxygen, carbon dioxide when you breathe in, you take in oxygen and when you breath out, you release carbon dioxide.
<span>B is the correct answer. Multicellular organisms, as with almost all organisms, begin life as a single cell. The increase in the number of cells can be as a result of cell division or cells combining together. </span>
Answer:
A. 25 °C, 30 °C, 35 °C, 40 °C, 45 °C
Explanation:
Each enzyme has a temperature at which it works best. In humans and many animals, that temperature is around body temperature (37 °C or 98.6 °F). Most enzymes are denatured and work poorly at 40 °C (104 °F).
That automatically eliminates Option B.
I would pick a temperature close to 37 °C (98.6 °F) and temperatures at intervals above and below that.
Option D is wrong because it includes no temperatures above body temperature.
Option C is wrong, because it includes temperatures of 45 °C and 55 °C, at which the enzymes will be denatured.
That leaves Option A as the best answer. It includes only one temperature above 40 °C.
Movement, breathing walking
Answer:
Explanation:
A reactant is a substance that take part or begin a chemical reaction and it is consumed during the reaction to form products. Reactant is on the left of the reaction.
For examples during photosynthesis, the reactants are carbondioxide, water and sunlight that give the product glucose and oxygen.
Carbondioxide, water and sunlight start the reaction and are consumed to produce glucose and oxygen.
