Which organ system is most directly involved in the transport of oxygen?

Chlorine has 7 electrons in its valence shell it accepts the electronic to complete its octet it becomes an chlorine ion (CI-) what is the nature of this chlorine ion

Identify the three reasons cell division is important

What structure in the cytoplasm of the cell is the physical site for the formation of proteins?

What do the arrows tell us in a food chain? The way light is radiated from the sun. The direction of energy movement. The movement of each organism in their habitat. The flow of water within an ecosystem.

The role of chlorophyll in photosynthesis is to A. Pass electrons to the stroma B. Split water molecules C. Absorb light energy D. All of the above

What are two ways that humans pollute the air?

How does the water inside plants return to the atmosphere? Runoff Evaporation Precipitation Transpiration

Mitosis results in how many cells? are they different or identical? what kind of cells do mitosis?

Dense water near the poles sinks, creating a current towards the equator. What would you expect to happen to the current if temperatures at the poles decreased?

Which substance will have a pH close to 7