Una galleta con chispas de chocolate y un helado con fresas, son ejemplos de: A. Sustancia
B. Compuesto
C. Mezcla homogénea
D. Mezcla heterogénea

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

What amino acid is coded for by this sequence after the mutation

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.