At the center of the Andromeda galaxy is a source of x rays that scientist believe is a black hole with how many more times than the sun

The radio waves have a frequency of 4.8 % 109 Hz Wave speed of electromagnetic waves = 3.0 x 108 m/s Calculate the wavelength of the radio waves. Give your answer to 2 significant figures.

What phase of mitosis is the clearest under a micro scope?

In humans, a combination of XX chromosomes results in a female zygote and that of XY result in a male zygotes. From whom does the a male zygotes inherit an X chromosome

A scientist get unexpected results from an experiment. what is the best response to the situation A. the scientist should throw out the result and start over. B. the scienctist should announce the results immediatly C.

An overlap in the niches of two species will most frequently result in interspecific cooperation A a hybridization of species B a mutualistic symbiotic relationship C an increase in the biomass D interspecific competition

Which of the following is likely to be made from a thermoplastic? -a car bumper -a grocery bag -support beams for a building -lawn furniture

Is there any place on Venus humans could live? Explain.

The brain reaches its maximum size between ages 5 and 7. True or false

The seafloor and continental land are similar in age. a) true b) false

Which of these vaccines must replicate to stimulate an immune response? hpv9. mmr. mcv4. tdap?