1. why is energy needed for active transport?

Active transport is requires energy because it is not a passive process.

Explanation:

The molecule has to go against the concentration gradient.

Why is energy needed for active transport? Because active transport is required to have energy, but it is not a supine process. The molecule basically has to go AGAINST the concentration slope. For this reason, it requires energy to be carried by the carrier proteins.

Hope this helps yaa!! :-)

c. the initial amount of money placed in the savings account