Answer:
Lymphatic vessels are part of the lymphatic system.
Explanation:
They are similar to blood vessels that are found in the cardiovascular system, but they carry lymph instead of blood.
Answer:
D/ Kilograms per cubic-centimeter
Answer:
The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle. Respiration happens all the time, but dominates during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.
Explanation:
