A population of plants has individuals with purple flowers and individuals with white flowers. Due to a change in the insects that pollinate the
plants, having purple flowers becomes a big survival advantage.
What will happen over next few generations?

Evaluate this exponential expression,8. (2 + 3)2 – 42

When balancing a chemical equation:

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?