1) D. 4; this is because you can conduct experiments to see if larger-petaled sunflowers really do attract more bees than smaller-petaled sunflowers.
2) A. The exact experiment can be repeated by others and the results compared.; they will get a more accurate conclusion to which sweetener will attract a larger number of ants once they compare results after doing the exact same experiment.
3) A. All types of metal are attracted to magnets.; we know this is the answer because that's the only reason she got DIFFERENT types of metal. If she was testing if HEAVIER metal objects are more attracted, than why wouldn't she get the same type of metal but get different types of weight?
The election determines the future because it allows that elected president allows him/her to grant permission for there policy's or laws
<span>Piaget will describe an infant who is sucking the thumb as the infant is exploring the world and experiencing it for the first time with trial and error, due to which it learns the texture consistency and mature of objects around, and if the infant finds it enjoyable or interesting then it will do it again and again just as the sucking reflex in new borns.</span>
3. Contributed to the development of representative democracy
Biogas is a renewable, as well as a clean, source of energy. Biogas plants significantly curb the greenhouse effect: the plants lower methane emissions by capturing this harmful gas and using it as fuel. Biogas generation helps cut reliance on the use of fossil fuels, such as oil and coal.