Is a living bone cell that once was an osteoblast b. is a dead bone cell that once was an osteoclast?

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

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

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?