In most mammals the placenta is essential to the embryo for the process of

Which of the following may occur at a transform plate boundary? 1) formation of new oceanic crust 2) mountain building 3) volcanoes 4) earthquakes

Specialized structures that work together inside a cell are called

Explain how a plant can cause a rock to weather

What type of microscope is used to show the fine detail of cell organelles, as well as the spindle fiber and chromosomes as seen during anaphase

a student drew the following model: volcano cooling crust motion plates compression which landform should the student put next in the sequence? a. Folded Mountain b. plain c. lava flow d. Rift valley

Explain why clear-cutting is a more destructive method of wood harvesting than selective cutting.

Which process changes sedimentary rocks into igneous

Unlike minerals such as iron and calcium, protein is a macronutrient in the human diet. Why is protein a macronutrient?

Energy drinks have become increasingly popular. Somebody's trying to contain large amounts of caffeine which is known to increase heart rate in most individuals. This effect on the heart rate can be Dangerous because it can lead to

Which statement describes an activity of a decomposer? A) a mushroom digests and absorbs nutrients from organic matter?