Which of the following characteristics must an object possess in order to be considered alive?

highly organized or complex
composed of one or more cells
contains genetic program
capable of movement on its own
acquires and uses energy
responds to stimulus

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

About how much of the cell mass is watet