I believe the answer is most likely
C): 4
I hope this is correct and helps
Answer:
constant = changes and control is used as the basis of comparison
Explanation:
Constant variables are variables that do not change
e.g such as the temperature ( if it's meant to be kept at a constant temp).
Control variables are meant to be kept constant to allow for a comparison and thus determine the effect of IV (independant variable) and DV ( dependant variable)
Answer:
the photons coming from sunlight
Explanation:
In an ecosystem material is recycled and energy is provided then transferred but never recycled.
Yes because the salinity is the amount of salt in the water, which if increased could lead to animals being unable to drink from water sources, such as rivers. While the plants would most likely adapt over a long period of time the still would be affected by the higher salt levels going into their stems.
