four steel bricks were heated to different temps. and stacked together a shown . In which direction would the heat be transferred?

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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.