eosinophils
They are the type of white blood cells mainly involved in parasitic infections.
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
Answer: Allows a magnified 3-Dimensional perspective when dissecting. This enables more accuracy in movements.
Explanation:
Answer:
Cyanobacteria
Explanation:
Cyanobacteria were the first photosynthetic autotrophs that used water molecules as the source of electrons. Cyanobacteria were the first autotrophs that performed oxygenic photosynthesis and carried out the splitting of water.
The process of splitting water released oxygen as a gas (O2) which was released in the atmosphere of the earth as a by-product. This led to the accumulation of oxygen in the atmosphere. Some cyanobacteria can fix nitrogen and have specialized cells called heterocyst which serve as the site for nitrogen fixation.
