What leads to long-term immunity in mammals? . a. exposure to an antigen . b. action of an antibody . c. barriers

50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.

Label all the places where dna is located in the plant cell and in the animal cell. dna

What determines whether a particular cell is able to respond to a hormone?