subject
Biology, 17.09.2019 02:00 brittainpolk453

The first organisms on earth appeared approximately 3.5 billion years ago and were all unicellular. multicellular organisms have only existed for about one billion years. what evolutionary milestone made it possible for more complex, multicellular organisms to exist?

ansver
Answers: 1

Other questions on the subject: Biology

image
Biology, 21.06.2019 23:10, gobbler80
Getting out of bed is the first goal i tackle each day. 2several small goals are achieved by me as the day progresses. 3when i am riding the bus home or walking the dog, i think about the bigger goals i have for my life. which statement correctly describes the verb tense, aspect, and voice in this paragraph? a. sentences 1 and 2 contain present progressive verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice. b. sentences 1 and 2 contain simple present verbs. sentence 3 contains present progressive verbs. all three sentences use active voice. c. sentences 1 and 2 contain present progressive verbs. sentence 3 contains simple present verbs. all three sentences use active voice. d. sentences 1 and 2 contain simple present verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice.
Answers: 3
image
Biology, 22.06.2019 04:30, andreastyles1603
Which would be the most useful source of evidence to support mcneill's contention?
Answers: 3
image
Biology, 22.06.2019 08:10, Haneendye123
In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles
Answers: 1
image
Biology, 22.06.2019 12:30, nyiapower9705
Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a) catalysis b) metabolism c) anabolism d) dehydration e) catabolism
Answers: 1
You know the right answer?
The first organisms on earth appeared approximately 3.5 billion years ago and were all unicellular....

Questions in other subjects:

Konu
History, 30.06.2021 21:10