Suppose you wanted to estimate the number of dandelions in a field. It could take hours to count every single one, so ecologists use a SAMPLING technique. A single sample is used to estimate the size of the overall population. 1. what might cause the estimate to be wrong with this method?

2. Why would it be too difficult to use this method to estimate the population of fish?

Where is the picture at

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.

This movement is also referred to as  glacial plucking

Because some people pollute water ans waste it