A is the answer, a squirrel wouldn't need to swim, a desert animal needs to be able to deal with low water conditions because there is little water in the desert and birds need to be able to groom themselves.
The answer is b. The increase in population suggests that a beneficial trait helped the species.
The statement about pesticides and herbicides that is not true is B) Once the pesticides and herbicides break down, they are no longer harmful. In fact, they remain harmful long after they break down, so this option is incorrect.
The correct answer is a semi-permeable membrane.
A semipermeable membrane refers to a layer, which only allows some of the molecules to pass through. A semipermeable membrane can be both artificial and biological. The speed of passage relies on the concentration, pressure, and temperature of the solutes or molecules on either side, as well as the permeability of the membrane to each solute.
On the basis of the solute and the membrane, permeability may depend on the size of the solute, properties, solubility, or chemistry. A semipermeable membrane illustrates a membrane, which permits some of the constituents to go through, while the selectively permeable membrane opts for the substances that pass through.
