If the microscope is lighter then a brick that means you have to multiply The two numbers In a row
Answer:
none of the above
Explanation:
input would be carbon dioxide and output would be oxygen
One grow/develop 2 reproduce 3 obtain/ use energy 4
(4) organic catalysts
The job of catalysts in chemical reactions is to make the reaction go faster by lowering the amount of energy needed to activate the reaction. If less energy is needed for the reaction to occur, then the reaction can go faster because a large energy build-up is not needed.
Answer:
Stomach acid kills bacteria and parasites that have been swallowed. Your urine flow flushes out pathogens from the bladder area. Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens
Explanation:
