a teacher studies how the number of absent affects the final grade of their students. what would be the dependent variable?

Estimate the kinetic energy of the neptune with respect to the sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. [assume the neptune is a uniform sphere with mass = 1.0×1026 kg , radius = 2.5×1010 m , rotation period 16.1 h , orbital period 6.01×104 d and is 4.6×109 km from the sun.]

Human population projections are subject to change due to fluctuations in global fertility and mortality rates

Anew product is designed to make plants grow faster. twenty plants are fed the new product and twenty plants are used as a control group. which possible issue might cause an unavoidable error in the study?