Suppose you moved into a wooded neighborhood where the people are determined to get rid of black snakes. How might you explain to your new neighbors the importance of a single species to a habitat?

In an energy pyramid, which level has the most available energy?

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit