Is Ni(NO3)3 ionic or covalent and why

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *