The best answer i see is A)- Cooling
i hope this is right and it helps you
Answer:
hello
Explanation:
Phytoplankton are the autotrophic components of the plankton community and a key part of ocean and freshwater ecosystems.
have a nice day
The controlled experiments are performed by the scientists, when they want to study the changes in the sample on changing a single variable. So, the correct answer is option (b).
In case, all variables are kept same, no changes would be observed in the experiment sample. A controlled experiment can be performed on living thing as well as non living. But, controlled experiment cannot be performed on the things which are influenced by a lot of variables, as they cannot create realistic results. So, the option (a), (c), and (d) are incorrect.
Answer:
I could be wrong but I believe it is,
"rocks," and "dark matter"
