This is false
The law of conservation of mass states; "atoms cannot be created or destroyed"
Answer:
A) One band of intermediate density and one band of heavy density.
Explanation:
According to semi conservative model of replication the two DNA strands separate during replication such that the new DNA molecule has one parental strand and one new strand. In this experiment, originally E.Coli cells were grown in 14N medium so all the DNA strands had 14N. When the medium was changed to 15N, only 15N would be available to the cells for replication.
After first round of replication all DNA molecules would be of intermediate density as one strand would be old 14N strand and another would be new 15N strand. After second round of replication 15N strand would be formed from both 14N strand and 15N strand. So, one band will be formed of intermediate density (14N-15N) and another would be of heavier density (15N-15N).
Crude density and ecological density are both related but different. Ecological density is the portion of land that a certain species can colonize, where as crude density is the land within the organism's range.
He California Floristic Province (CFP) is a floristic province with a Mediterranean climate located on the Pacific Coast of North America with a distinctive flora similar to other regions with a winter rainfall and summer drought climate like the Mediterranean Basin. This biodiversity hotspot is known for being the home of the Sierran giant sequoia tree and its close relative the coast redwood.[1] In 1996, the Province was designated as a biodiversity hotspot allowing it to join ranks among 33 other areas in the world with rich and threatened endemic species. To be named a biodiversity hotspot, an area has to contain species and plant life that cannot be found anywhere else in the world. The California Floristic Province is home to over 3,500 different species of plants, 61% of which are endemic to the province.
C, frameshift mutation
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