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Introducción to Biochemistry: Mastery Test
1
Select the correct answer.
Why might two elements possess similar chemical properties?
ОА.
They belong to the same group of the periodic table.
OB. They have the same physical state.
OC. They have similar physical properties.
OD. They belong to the same period of the periodic table.
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Most of the carbon on earth is stored in the form of

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.