The team led by Professor Boylen surveyed plant and animal populations in 30 lakes in the Adirondacks over a period of 16
years. Suggest why surveying only a small number of lakes, or studying the lake
over only a small number of years, might reduce the power of the team's results to
explain the effects of how lake ecosystems recover after a period of acidification.

Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211

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

Find the mass in grams of 1.37x1020 particles of h3po4