What is an element?
A. a type of proton
B. a substance that cannot be separated into simpler...
Biology, 25.09.2020 22:01 teacherpreacher
What is an element?
A. a type of proton
B. a substance that cannot be separated into simpler substances
C. a mixture of two metals
D. A compound that was created by a chemical reaction
Answers: 3
Biology, 21.06.2019 20:00
Microorganisms are involved in each of the following processes excepta. smog production.b. food production.c. infection.d. o2 production.e. decomposition of organic material.
Answers: 1
Biology, 22.06.2019 03:50
What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen
Answers: 1
Biology, 22.06.2019 11:30
If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm
Answers: 1
Biology, 22.06.2019 20:00
Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b.hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.
Answers: 1
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