Biology, 28.07.2019 22:00 BreadOfTheBear
Researchers recently discovered an exquisite fossil of a fern (land plant) in sweden. the plant was preserved instantaneously when buried in a lava flow. under a microscope, scientists can see nuclei, some in different stages of cell division, along with some individual chromosomes. this fossil fern was found in a layer along with dinosaur fossils. how old could this fossil be, based upon this information and dates of events in the history of life
Answers: 1
Biology, 22.06.2019 10:30, DakotaOliver
Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?
Answers: 2
Biology, 22.06.2019 12:30, tiarafaimealelei
This is collection of data made by comparing objects in standard units. in science, the units are metric.
Answers: 3
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