What chemical family is sodium in? O a
alkali metals
b
alkali earth metals
C
transition metals
Od
halogens

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

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

What do transitional fossils best support?