Answer:
To keep the earth safe and clean
Explanation:
If we keep the ocean clean then the water creaters will be able to live better, I mean how would you feel if someone was putting trash in your home., not so good huh. if you recycle your stuff like paper then frewer trees are cut down, yes they do plant one tree every time they take one, but it takes years for the oxygen to rebuild to the same leave, and without trees, not co2 and oxygen.
Answer:
The answer is: 3. populations, communities, and ecosystems.
Thank you for posting your question here at brainly. <span>Two types of treatments: type of seed and fire. </span>
<span>Type of seeds: 1. Known seed type that requires fire. 2. Known seed that is killed by far. 3. Experimental/unknown seed. </span>
<span>Fire treatments: 1. No fire. 2. Fire. </span>
<span>You could potentially make this more complex (e.g. more types of known control seeds; more complex fire scenarios), but that should be enough to get you started.</span>
Basically they say "null hypothesis" according to source:
http://www.statisticshowto.com/what-does-it-mean-to-reject-the-null-hypothesis/
Based on the scenario, it would be most likely that the type of bacteria is : A. Archaebacteria
Archaebacteria is the oldest type of bacteria, which exist at the beginning of the world back when Oxygen still hasn't exist in its environment
hope this helps