Biology, 02.05.2021 21:20 LMedley1373
A radioactive element has a half-life of 1000 years. A rock contains 6.25% radioactive material. How old is the rock?
Answers: 1
Biology, 21.06.2019 14:20, caromaybelline71
Aseries of connections of food chain in an ecosystem is called a what
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Biology, 21.06.2019 16:00, prettygirllniyiaa
Which of the following examples can cause gene flow between populations? a. an increase in predators to a population of zebra b. a volcanic eruption that kills half of a population of mice c. bird droppings that contain seeds from a different location d. a person that sprays a toxin on a group of mosquitoes
Answers: 2
Biology, 21.06.2019 20:00, smariedegray
Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium
Answers: 1
Biology, 21.06.2019 20:30, jbismyhusbandbae
Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?
Answers: 1
A radioactive element has a half-life of 1000 years. A rock contains 6.25% radioactive material. How...
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