The answer i think is gene and i can garantee
it is correct
"A characteristic that helps an organism survive and reproduce" is the one among the following choices given in the question that <span>is the best description of an adaptation. The correct option among all the options that are given in the question is the last option or option "D". I hope it helps you.</span>
Carbon dioxide, or CO2.
Plants produce oxygen for us to breathe, and in exchange they take the gas we breathe out: carbon dioxide.
A functional disorder is a medical condition that impairs normal functioning of bodily processes that remains largely undetected under examination, dissection or even under a microscope. At the exterior, there is no appearance of abnormality. This stands in contrast to a structural disorder (in which some part of the body can be seen to be abnormal) or a psychosomatic disorder (in which symptoms are caused by psychological or psychiatric illness). Definitions vary somewhat between fields of medicine.
Generally, the mechanism that causes a functional disorder is unknown, poorly understood, or occasionally unimportant for treatment purposes. The brain or nerves are often believed to be involved. It is common that a person with one functional disorder will have others.
1. C. prey-predator
2. A. competition between lizards and frogs for food
