Which activity is an effective solution for keeping the oxygen cycle stable?
O
A. Dumping waste from ships into the ocean
B. Pruning trees in the backyards of homes
C. Raising more cows on farms
D. Replanting trees in deforested areas
SUBMIT

An easy way to calculate the amount of energy available at each level is to what?

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Select the word from the list that best fits the definition a system made of 25 satellites