Which statement describes the formation of the milky way galaxy? 1) a disk formed of long trails of stars coiled into a spiral. 2) it formed an elliptical flattened disk. 3) heat and gases contracted within a nebula. 4) gravity pushed stars away from a center core.

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab

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