Answer:
B
Explanation:
Alternative energy is the same thing as renewable energy which should be natural processes
the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Answer:The white blood cells involved in innate immunity are. Monocytes (which develop into macrophages). Neutrophils. Eosinophils. Basophils. Natural killer cells.
Explanation: MERK MELLS
