A. they divide in two
i dont know b sorry
The provided question lack the essential part which is required to answer the question, however the correct part is attached with with the question as image.
Answer:
From the provided punnett square it is clear that the genotype of parents are Rr for each. On this basis offspring which is maria that can be either RR, Rr, or rr. Maria have chances to get RR= 25%.
There can be no 100 surety of the phenotype of maria as there is 25% chances of rr and 75% of ability of tongue rolling.
to get Rr=50% and rr = 25%
Answer: atmospheric, carbon dioxide
Global climatic change is directly linked with the changes in the atmospheric conditions, this is because of increase in the carbon dioxide levels in the atmosphere. Atmosphere is the distinct layer of gases in the planet earth. Atmosphere regulates climatic change in a region. Carbon dioxide is a hot and harmful gas affects the quality of respirable air, and increasing the temperature of global climate.
The key difference between age polyethism and reproductive division of labor in honey bees is their age and functions, younger bees work inside the honeycomb, they have several duties, such as feeding the larvae, cleaning, thermoregulate the inside and receiving the nectar from the older bees, through trophalaxy (mouth contact), those bees are in charge of the guard an cleaning of the outside, besides helping with the honeycomb ventilation.