Which of the following organisms have the GREATEST effect on an ecosystem because of the changes they make to their environment?

If a balloon is taken outside on a very cold day, what will occur?

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.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?