D.
when revising your professional development plan
Answer: Dip tube. This tube, located at the top of the tank, serves as the entry point for water as it flows into the tank. The water then travels to the bottom of the tank, to the area known as the combustion chamber, where the heating process begins.
Explanation: Thats what the internet says, and the internet is almost always right, hope you get it right.
Answers;
Cellular respiration;
Explanation;
Food molecules contain biochemical energy which is made available by cellular respiration;
The process of cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy.
The purpose of cellular respiration is to provide cells with the energy they need to functioning and activities such as growth and movement.
If I'm not mistaken, it leaves through the osculum which is a cavity located on the upper part of a sponge.
Sponges feed through a process called filtration, which means that they filter the water in search of nutrients. And after they collect everything they need from the water, they need to let it out somehow; through the osculum.
Hope it helped,
BioTeacher101