"Time is the independent variable, and the number of birds is the dependent variable" is the one among the following choices given in the question that states the independent and dependent variables in Sam’s investigation correctly. The correct option among all the options that are given in the question is the second option.
Answer:
It destroy both harmful and beneficial microbes.
Explanation:
If scientist added a chemical to destroy the arctic microbes, the beneficial as well as harmful microbes also eliminated from that area where chemical is applied. The removal of harmful microbes is a good thing but the removal of beneficial microbes brings instability in the environment. These beneficial microbes helps in the recycling of nutrients for the plants present there. So the negative effect of chemical is that it also effect the beneficial microbes which are necessary for the ecosystem.
I believe that if kinetic energy were to decrease, then the speed would decrease because the more kinetic energy an object has, the more speed an object has.
Reactants of photosynthesis include light energy, H2O, and CO2. So I would imagine it’s H2O and CO2