One unique feature of stratosphere is that it contains a layer of ozone gas, which protect us from the sun's rays.
The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits
I think it's Photosynthesis because photosynthetic bacteria began producing excess oxygen, which added oxygen to the Earth's atmosphere.
Answer:
Stamens are the male reproductive organs of flowering plants. They consist of an anther, the site of pollen development, and in most species a stalk-like filament, which transmits water and nutrients to the anther and positions it to aid pollen dispersal.May 6, 2004
Explanation:
:D
Answer:
The monomers combine with each other via covalent bonds to form larger molecules known as polymers.
Explanation:
A monomer is a type of molecule that has the ability to chemically bond with other molecules in a long chain; a polymer is a chain of an unspecified number of monomers. Essentially, monomers are the building blocks of polymers, which are more complex type of molecules
and example of such is seen in several monosaccharides (glucose, fructose)joining together to form polysaccharide like starch
