Scientists estimate that the composition of Earth’s atmosphere has changed over time. Which of the following most likely caused Earth’s atmosphere to support diverse life-forms?
A: the drift of continents
B: a transfer of gases from the Sun
C: changes in Earth’s magnetic field
D: oxygen-producing organisms

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement  most likely  describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry