What advantage does nuclear power have over fossil fuels a. it is available in poor countries b. it has less risk of dangerous explosion c. it is less expensive d. it had no negative byproducts

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Which box will not accelerate? 4 newtons 4 newtons 4 newtons 25 kg 4 newtons 15 newtons 10 kg 30 newtons 40 newtons 50 kg 30 newtons 30 newtons