The diagram shows structures found in a seed plant
What is the function of the structure labeled X?
provides food for embryo
fertilizes egg
carries food produced by leaves
moves water from roots to rest of plant

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

What is thought to have caused the mass extinction at the end of the cretaceous period?

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