The universe is all the exists. It contains every star, every planet and everything else. What is holding all of these things together?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity