<span>the deliberate modification of the characteristics of an organism by manipulating its genetic material.</span>
then it means that they have a survival trait or otherwise known as an inherited trait for survival .. since animals do not have warm houses like us they need to develop fur or something else which means that the skill that is favorable to the environment is an inherited trait
plz mark brainliest
<span>Cast is a fossil that is a copy of an organisms shape, formed when minerals seep into a mold.
A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, also called a mold fossil, which is in the general form of the original organism.</span>
Lead I believe would be the heaviest because gold is relatively light
