explain why the circulatory system of a frog is less efficient at carrying oxygen to the tissue than the circulatory system of a human.

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars

Which of these is evidence of global warming? a. overall rising seal levels b. falling global temperatures c. an increase in the size of glaciers d. stable precipitation patterns appex