Determine if each of the following statements is a well-written, testable hypothesis. Explain your answers. a. If the soil is at a pH level of 8, then the plants will have the higher yield.

b. If I give the dog a treat, then she will be happy.

c. When you miss a meeting, everyone else is sad.

d. If I run 5 miles, then my heart rate will increase.

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b. passive c. facilitated d. active b. passive

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.