Rhenium is the very dangerous (hazard wise) it should be handled carefully and you should understand that THIS should not be taken lightly I hope this helps!:)
A. 0 (all the offspring will have Rr genotype)
B. 100% all rr
C. 50% will be Rr
D. 75% will have the dominant phenotype
hope this helps:)
Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes (such as, notably, ammonia, nitrate and nitrogen dioxide).
Nitrogen fixation is performed naturally by certain types of anaerobic bacteria. Legumes such as clover contain symbiotic bacteria of this type within nodules in their root systems, producing nitrogen compounds that help to fertilize the soil. See George Washington Carver.
Nitrogen can also be artificially fixed for use as fertilizer or in other industrial processes. The most popular method is by the Haber process. Artificial fertilizer production has achieved such scale that it is now the largest source of fixed nitrogen in the Earth's ecosystem.
(This is the definition from the http://encyclopedia.kids.net.au/page/ni/Nitrogen_fixation website)
Answer;
C. high blood pressure
Explanation;
The ‘fight or flight’ is the body’s natural defense system which automatically triggers when there is a real or perceived threat.
The sympathetic nervous system is the part of the nervous system prepares the body to take action when a threat is perceived.
During fight or flight” the body responds by making the heart beat faster and constricting blood vessels to get more blood to the core of the body instead of the extremities.
Your answer should be A. by observing the formation of sedimentary rocks.
