What conclusions can you draw about Earth's climate and atmosphere during the silurian period?

Umbilical cord blood is a rich source of stem cells. which possible advance in biology would most likely be a result of performing research with an individual’s banked cord blood? creation of a novel cancer cell line to test anticancer agents creation of a personalized cell replacement therapy for the donor creation of a skin graft for an unrelated burn victim creation of a culture to produce vitamin e

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?