Biology, 26.09.2019 17:30 yunggin8243
Scientists use potassium-argon method to determine the age of a rock sample. three separate tests showed the rock to be 1.3 billion years old. however, scientists know the rock must be at least 2.5 billion years old based on the rocks around it. how is this possible?
Answers: 3
Biology, 21.06.2019 19:30
Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation
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Biology, 21.06.2019 23:20
What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences
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Biology, 21.06.2019 23:50
Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?
Answers: 2
Biology, 22.06.2019 01:00
Talking listening and reacting non verbally are all part of communicating
Answers: 2
Scientists use potassium-argon method to determine the age of a rock sample. three separate tests sh...
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