S: monotremes................................
A carbon atom has 4 valence electrons
Cell transport is useful because it's, essentially, the movement of cells across the blood/veins. Active transport uses energy, while passive transport does not.
Answer:
Explanation:
In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas. Once evaporated, a molecule of water vapor spends about ten days in the air.
Answer:B
Expiation: Mediterranean (mild) means hot summers, cool winters;dry summers,wet winters
