Answer:
two strands of nucleotides
Explanation:
nucleotides are made up of suger, a phosphate, and a nitrogen base The sugars and phosphates make up the ''handrails'' or ''backbone'' however you wanna say it and they are held together by covalent bonds.
Answer:
option 2
it is the last thing that could happen in the pictures
Answer:
L. E, F, G, H, I, J, K, D, C, B.
Explanation:
L is the oldest layer because it is present below all of the layers followed by E layer then F, G, H, I, J, K, D, C and B. B is the youngest layer because it is present above of all layers and formed recently. the layers formed after B layer is C layer which is younger than the rest of the layers but older than B layer. D layer is also older than C and B layer but older than the remaining layers.
Yes it is a because the resources in the humans home may not have the same as the one they want to migrate to
