8. How does the proportion of hydrogen and helium in the universe support the Big Bang theory? It demonstrates the rate of expansion predicted by the theory.
It is the proportion predicted to be present in the early universe.
It proves that matter must be formed under high temperatures.
it shows that only simple elements are present in the universe.

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.