Marina walked 2km in half an hour, what was her average speed during her walk?

What are two different ways you could find the value of a? explain these methods.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Explain why you think this diagram shows what happened to the carbon in the biodome.