Answer:
<em>Natural selection was proposed by Darwin. </em>
Explanation:
He stated that when the limiting factor exist then different species of organism have to compete with each other and the species that is able to survive the competition stays and adapt themselves according to the condition.
Darwin studies natural selection in birds of Galapagos island. He must have faced difficulties and they are: complex environment is difficult to study, it may take longer to study different generations of a population and the birds may be dependent on other species that also might have evolved.
Fire is not composed of cells.
Explanation: According to the cell theory, the cell is the basic unit of structure and function in living things. If something is not composed of at least one cell, it is not living.
They are grown from other potatoes. So in order to grow a potato u have to plant a potato.
<span> is an </span>inactive vaccine<span> used to prevent </span>tetanus.[1]<span> During childhood five doses are recommended, followed by additional doses every ten years. After three doses almost everyone is immune.</span>[1]<span> In those who are not up to date on their tetanus immunization a booster should be given within 48 hours of an injury.</span>
