4. Biotic factors that affect other organisms in an ecosystem include all but which of the following factors? a. Symbiosis b. Predation C. Volcanic eruptions d. Competition​

How are isotopes of the same chemical element alike? how are they different?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

How many molecules are in 6.0 moles of methane