Ans.
Unicellular organisms are those organisms that are made up of a single cell, while multicellular organisms are made of up more than one cell. During 17th century, a scientist could distinguish between an unicellular and a multicellular organism by using simple microscope, developed by Antony Van Leeuwenhoek. In the mid-20th century and 21st Century, a scientist could make distinction between unicellular and multicellular organisms, by using advance microscopy techniques, such as electron microscopy and electron microscopy.
The answer is b. is under purifying selection
Answer:
The loudest animal in the world is a mere 2cm long
Explanation:
Im pretty sue it would be <span>increased biodiversity</span>