For a planet orbiting the sun, rprp is the distance from the sun to the perihelion and rara is the distance from the sun to the aphelion. What is a planet’s orbital eccentricity if rp is equal to 0.45ra0.45ra? A. 2.64
B. 0.38
C. 0.55
D. 1.45

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Which represents the cross between parent plants if one is heterozygous for yellow-colored pods and the other is homozygous for green-colored pods? yy  ´    ´    ´    ´  yy

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?