Until about 200 million years ago, Earth's continents were joined as a single land mass called

A. Asia Minor.

B. Pangaea.

C. Glossopteris.

D. Cynognathus.

How does the serous membrane protects organs from infection?

Just so everyone knows this is for science! Sublimation happens to a solid when ... A. the energy increases and the particles move so fast they turn to gas B. the energy decreases and the particles move so slowly they fall C.

For many years, it was believed that the Earth was flat, that the Earth was the center of the universe, and that the fire and water were part of the basic building blocks of life.

Maps are examples of what type of models that people might use everyday

One of three biomolecues stores all of information needed to produce body proteins? A. Nucleic Acid B. Protein C. Lipid D. Carbohydrates

a cell with 5% salt concentration is placed in a beaker with 1% salt concentration. what will happen to the cell over time

What are the roles of the nervous muscular circulatory and respiratory systems in heat regulation?

Which cell structures are seen in all cell types? Check all that apply. - DNA - cytoplasm - nucleus - ribosomes - cell membrane

The small blood vessels that deliver blood to and pick blood up from tissues are

What is the role of phospholipids and proteins in controlling the passage of substances across the cell surface membrane, making reference to its partially permeable nature.