How does natural selection change the frequency of genes or traits over many generations? biology students conducted an experiment mimicking genertic variation and coloration students used different colored beans to represent animals that might be prey: mice for example. A student in each group was the predator: a hawk. beans.(mice) were randomly scattered on multicolored floor tiles, each color within four tiles The hawk collected mice (beans) for 10 seconds. mice not eaten reproduced. Three generations of data a shown in the table. All BUT ONE could be a reason for the color variation in the mice . that is A) meiosis

B) mutations

C) genetic variation

D) ase xual reproduction

please answer i'm on a test

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

Which subatomic particle has a negative charge