What are the characteristics of archaebacteria? a)they are single cells that have a nucleus and tend to live in moderate conditions. b)they are single cells that lack a nucleus and tend to live in extreme conditions. c)they are single cells that lack a nucleus and tend to live in moderate conditions. d)they are single cells that have a nucleus and tend to live in extreme conditions.

What are chlorofluorocarbons made of

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.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen