The diagram shows a pedigree for a certain trait in three generations. The grandparents are represented at the top and the grandchildren are at the bottom. How many grandchildren in the pedigree show the trait?

0
1
3
4

i think that d. wind is the answer.   i missed the question when i answered a. currents.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.