Answer:
Ecologist
Explanation:
"Ecologists study the interrelationships between organisms and their environments." (Environmentalscience.org)
I don't know about the other ones but the sky is blue because molecules move from the sun than the red from the sun. The blue has separated from the sun.
Answer:
The fetus gets it's nourishment through the umbilical cord that is connected to the mother's uterus
Deep inside the core of the sun, protons can collide into eachother with enough speed that they stick together to form a helium nucleus and generate a big amount of energy at the same time.
