Compare Pangea to the new continents. Basically, compare the previous continents to the current ones. please help me!

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes