A biologist studied the trees in a nature preserve. She found that there were 4 different types of trees—pine, pecan, maple, and oak. The table below shows how many of each type of tree she found. Which circle graph is correct for the data in the table?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

5400 j of energy are given off when a 50 g of aluminum pan changes temperature. does the temperature of the pan increase or decrease and by how much