A scientist claims that after the first single-celled organisms formed on Earth, conditions would not sustain multicellular organisms for millions of year. Which statement provides the STRONGEST evidence to support this claim
A. Earth's early atmosphere lacked oxygen, which multicellular organisms need to break apart food
B. Earth's early atmosphere lacked nitrogen, which multicellular organisms need to synthesize proteins
C. Earth's surface was much too hot to support liquid water, which multicellular organisms need to survive
D. Earth's surface was much too cold to support liquid water, which multicellular organisms need to survive
Answers: 3
Biology, 21.06.2019 15:00
Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z
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Biology, 22.06.2019 07:00
What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele
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Biology, 22.06.2019 08:30
Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino
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