Chemistry, 19.09.2019 12:10 amohammad6
Which of these statements best explains how fossil records provide evidence to the scientific theory of evolution?
a. they show how natural selection happened on earth by chance.
b. they show how organisms choose to adapt to changing earth conditions.
c. they prove that structure and location of remains of organisms depict past events.
d. they prove that natural selection always leads to greater complexity in organisms.
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Answers: 1
Chemistry, 22.06.2019 02:00
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
Answers: 3
Chemistry, 22.06.2019 14:30
The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as
Answers: 2
Chemistry, 22.06.2019 22:30
Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?
Answers: 3
Which of these statements best explains how fossil records provide evidence to the scientific theory...
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