Industry
Cars
Fuel burning
Use of chlorofluorocarbons
Answer:
D
Explanation:
All of these factors change the aquatic environment or ecosystem. Hope this helps :)
In observing, we have our 5 senses (smell, taste, touch, see, hear) meaning scientists uses their 5 senses to be able to have a prediction or a hypothesis about the problem.
Answer:cellular respiration
Explanation: