Astudent human a cell with a microscope observes a cell wall a cell membrane and a nucleus the presence of these structures indicates that the student is looking at a cell from a
a. rabbit
b. carrot
c. worm
d. fly

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?