B is correct
Acids are molecular compounds that release hydrogen ions. A binary acid consists of hydrogen and one other element.
Most of the cells in the human body are diploid.
Diploid is <span>a cell or organism that has paired chromosomes, one from each parent. In humans majority of the cells are </span>diploid<span> and have 23 pairs of chromosomes. The exception are the human sex cells (egg and sperm cells). These contain a single set of chromosomes and are known as haploid.</span>
Convection is the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in the transfer of heat.
Its B since the lower leaves need sunlight to make food (photosynthesis)
