Answer:
a biologist
Explanation:
biologist are ecosystem experts.
good luck
Areas near continents where freshwater rivers enter the ocean. The ocean IS salt water.
Answer:
The vein
Explanation:
Veins have much thinner walls than do arteries, largely because the pressure in veins is so much lower.Veins can widen (dilate) as the amount of fluid in them increases.
Protons and neutral neutrons