Q: What contains carbon, hydrogen, and oxygen in a ratio of 1:2:1? Choices: - helium - sodium - magnesium - carbohydrate A:
carbohydrate

(Question)
Q: What are most fresh fruits, vegetables, whole grains rich in? Choices: - calcium - cholesterol - magnesium - cellulose A:
(Answer)
cellulose

Ques: Q: What was the last supercontinent on earth? Choices: - rodinia - laurasia - eurasia - pangaea A:
Ans: pangaea

(Q).
Q: Which theory states that all organisms are composed of one or more cells, the cell is the basic unit of life, and new cells arise from existing cells? Choices: - theory of evolution - microcellular theory - natural selection - unified cell theory A:
(A).
unified cell theory

Ques:Q: Abnormally high activity or low activity of the parathyroid gland can cause disorders related to levels of what bone mineral? Choices: - potassium - collagen - magnesium - calcium A:

Ans:calcium

Q: Name the plant considered to be the ancestor of plants? Choices: - brown algae - ferns - grass - green algae A:
green algae