(i)what relationship seems to exist between the number of species of snail present and the concentration of calcium in the water?

(ii) Give a possible explanation for this relationship based on the fact that one of
the components of a snail's shell is calcium

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm