In a certain area, mosquitoes that can resist the effects of pesticides (insect-killing chemicals) now exist in greater numbers than10 years ago. what is the most probable explanation for this increase in numbers?

The cluster of developing cells from conception until birth is called an

What element is able to combine with itself and hydrogen to form large molecules ?

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers