Caused by the pull of the moon and the sun on the earth
a) gravity
b) tides
c) eclipses
d) moon phases

Why do you think the puppy litter was all dark-haired?

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?