What is a source of genetic variation?

A adaptation

B mutation

C respiration

D transpiration

A patient repeats, "i feel hot. hot, cot, rot, tot, got. i'm a spot." the nurse documents this as an illustration of:

What are the roles of traits in determining the genetic outcome of an organism?

A student adds a suspension of baker's yeast cells into bread dough. When this mixture is left in a large bowl undisturbed for several hours, the student returns to find that the bread dough has doubled in size.

An important function of chlorophyll molecules during photosynthesis is

Which organic compound essential to cells is missing from the chart, and what function does it serve in cells. A.) Minerals - Building blocks of proteins B.) Minerals - Nutritionally-important substances that come from the earth C.

One Significant Figure Two Significant Figures Three Significant Figures Four Significant Figures 200 | 0.01 || 20 22||20. 1,230|| 8.88 || 136 155.6 || 1,245 8.880 One significant figure 200,0.01,20 Two significan figures 22, 20.

Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water? (a) He decreased the density by increasing the volume.

Why do cells need to divide? A. contain to many chromosomes. B. Cells need to get rid of waste products. C. cells cannot live unless they divide often. D. Cell division is how organisms grow

Which of the following is not part of the carbon cycle? -Photosynthesis in plants -Respiration in plants -Evaporation of water from the oceans -Decay of plants

What would happen if a keystone species is removed from an ecosystem