A mutation in the population of green beetle caused the creation of the new trait (brown color), that would make the genes for brown beetles become more frequent in the population. That created difference introduced by mutations might be advantageous and may help an organism survive. For example, green beetles are easier for predators to see and consequently eat than brown beetles. Thus, brown beetles are a little more likely to survive to produce offspring.
This is an example of how one evolutionary mechanism (mutation) can cause evolutionary change.
The answer is the food web would be affected and many populations of species would start to die off. Food web affects the aquatic plants that feed more the species of fish and every aquatic life. The population would decrease.
Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If one object transfers (gives) energy to a second object, then the first object does work on the second object.
Send a detailed email is the best way to deliver an update to her because in the email he can send all the information in detail form which can satisfy his owner. He can't call or message because it takes too much time to provide information so email is the best way to provide information. Booking a one-hour meeting is not worth it and the reason for this is that there is no big presentation which takes one hour of description one email is enough for it.