That answer is c all those involve gas and there all around our atmosphere
<h2>Respiration is a <u>
redox</u> reaction where sugar is oxidized to produce energy.</h2>
Explanation:
Respiration is a biochemical process that involves a series of reactions most of which are redox reactions to produce energy by oxidizing sugars.
It involves the breakdown of glucose (glycolysis) in the cellular mitochondria to produce ATP which is the fundamental unit of energy in the human body
There are choices for this question namely:
a. Oil and water
b. Salt and water
c. Brass (and alloy of copper and zinc)
d. Granite (a type of rock with multicolor spots)
The correct answers are
oil and water, and
granite. Heterogenous mixtures are mixtures wherein the solutes can still be identified from each other. Homogenous mixtures are mixtures wherein solutes are completely mixed and cannot be identified. In oil and water, one can identify which is the oil and which is the water. In granite, it is a mixture of different rocks and these different materials can be identified due to the presence of multicolored spots.