A cactus needle is a structure made of different tissues that work together to protect the plant from animals that might want to eat it. What level of body organization does a cactus needle represent? A. Cell
B. Organ
C. Cell system
D. Body system SUBMIT​

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory

Write a balanced equation showing the formation of copper (ii) nitrite from its elements