The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.
Hi!
The answer is B. chloroplast because prokaryotic cells don't have contractile vacuoles, DNA, or a nucleus.
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Hello friend!!
The biggest difference between the two is that the nervous system uses electrical impulses to send signals through neurons, whereas the hormonal system uses chemical messengers transported into blood plasma to target cells.
Transmission by the nervous system is short-lived but quick, whereas transmission by the hormonal system is long-lasting but takes much longer. Hene, communication is faster when using the nervous system.
In the nervous system, responses are localised - whereas in the hormonal system, they are widespread. Responses are often permanent in the hormonal system, but temporary and reversible in the nervous system.
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Answer:
Define Biosystematics ???
taxonomy based on the study of the genetic evolution of plant and animal populations.
Answer:
: A key difference between mitosis and meiosis is that sister chromatids remain joined during anaphase I in meiosis, whereas in anaphase of mitosis they separate. ... In what stage of meiosis do the centromeres separate, and the two chromatids of each chromosome move to opposite poles on the spindle? anaphase II. 9.
