Which is the source of variations in a population of organisms? No files or links 8th Grade. Please help ASAP. A- Changes in enviroment
B- Changes in genes
C- The interaction of genes with an enviroment
D- The interaction of individuals with an enviroment

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.