All of the following separate geologic time into eras, periods, and epochs except:
major ext...
Biology, 04.02.2020 19:48 Andychulo7809
All of the following separate geologic time into eras, periods, and epochs except:
major extinctions
periods of biological diversity
changes in the earth's geology
extinction of one type of species
Answers: 1
Biology, 22.06.2019 23:00
Nitrogen-14 and nitrogen-15 are isotopes of the same element. how do these two isotopes differ? a. they have different numbers of nuclei. b. they have different numbers of protons. c. they have different numbers of neutrons. d. they have different numbers of electrons.
Answers: 2
Biology, 22.06.2019 23:00
Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective
Answers: 2
Biology, 23.06.2019 01:00
Who is volunterring to with a lot of easy science questions? will give brainliest. i need and i need it now
Answers: 1
Mathematics, 11.12.2019 02:31
Biology, 11.12.2019 02:31