Which group of components is common to the circulatory systems of most living animals?

Why should children should be allowed to vote at elections? explain

Carlo is wondering what causes plants to grow at different rates. carlo’s hypothesis is “plants will grow more when the day is longer.” what would be the difference between the test group and the control group in this experiment? type of soil type of plants exposure to sunlight method for measuring the growth

Why are gold and platinum used for jewelry