They looked and saw Rosalind Franklin's X-ray crystallography which sparked them to think about the double-helix structure, and from there, they played around with cafeteria items (forks and spoons and whatnot) to create a model that finally worked.
Answer:
What impact do the available amounts of energy, water, and oxygen have on an ecosystem? They act as limiting factors. ... increasing the biodiversity of the ecosystem.
Answer:
fills container, no visible shape, flows
After the pairs of chromosomes are aligned, anaphase I begins. During this stage, the microtubules, or spindle fibers, pull the homologous chromosomes apart and move them to opposite ends of the cell.
Its called Anaphase when Chromosomes pull apart
Answer:
sinoatrial node and atrioventricular node
