Please I need help now!

A student observing animals at a zoo answers the following questions.

1. How many limbs does the animal have?
2. Does the animal have gills or lungs?
3. Does the animal have a backbone?
During which task is the student most likely to use this information?

A. drawing a food chain containing each animal

B. using physical characteristics to classify each animal

C. identifying the preferred food sources of each animal

D. understanding how traits are inherited by each animal

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Plants that have reproductive structures called cones are?

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis