Which is characteristic of a mineral? A. It must be man-made and amorphous. B. It must be man-made and crystalline. C. It must be naturally occurring and amorphous. D. It must be naturally occurring and crystalline.

Why do gametes contain half the number of chromosomes as body cells?

Question 16 What is chalk considered? an element a colloid a compound a solution

Do wind patterns contribute to global warming

The scientist at the weather office predicted that the temperatures in a city would drop over the next week. however the weather did not change which of these could be the most likely reason for the scientist's prediction was incorrect? a.

Consider the following research question. Research Question: Why are pickles stored in salt water? Which hypothesis is based on this research question? A. Pickles are green because that is a popular color. B.

Describe how scientists use mathematics in their work.

You are preparing a medium for growing fastidious bacteria and must add several heat-labile solutions of growth factors. Which of the following is an appropriate strategy for preparing and sterilizing this medium? a. Pasteurize the medium. b.

What does Earth's rotation on its axis cause? A the tides B night and day C passing of years D phases of the moon

What are two things that a leaf does for a plant

The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa and Ecdysozoa. What does this finding suggest?