A current In fluid that results from convection.
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They change into pupae for most of winter
Answer:
meiosis can only produce egg and sperm cells for sexual reproduction. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
Explanation:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce. I am not wrong so yeah.
In order for natural selection to occur, a selection pressure must be present. This selection pressure causes species to die out, and the ones that are able to cope with this pressure have what is called a selective advantage.
In the above mentioned scenario, the selection pressure on bacteria are the antibiotics that kill them. This occurs until some bacteria are born with a genetic mutation that allows them to survive the effect of an antibiotic.
Once this occurs, the bacterium is able to survive while the rest of the bacteria are wiped out by the antibiotic. This bacterium then has all of the present resources available to itself, which means that it can divide indefinitely until resources run out. It passes this antibiotic resistance to its offspring, and a strain of bacterium is formed which is resistant to antibiotics.
Answer:
The Concorde aircraft cruised at Mach 2 at about 19,000 m (62,000 ft), and the SR-71 cruised at Mach 3 at 26,000 m (85,000 ft), all within the stratosphere.
Explanation:
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