6. You design an experiment in which you investigate it different types of fertilize atteet tomato plant height. You prepare 4 plots of soil, all containing tomato plants. To the first
plot, you add a potassium fertilizer. To the second pict, you add a nitrogen fertilitet To
the third plot, you add a phosphate fertizer. You do not add any fertilizer to the fourth
plot You eventually gather data by measuring the height of each tomato plant,
B. What is the independent variable?
C. What is the dependent variable?
D. What type of data are you gathering qualitative or quantitative!

A where is question A?

B types of fertilizer

C plant height

D quantitative

the control is no fertilizer

& what is the null hypothesis?

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.