Which two observations were used as evidence for the idea of continental drift?
A. Most volcanoes on Earth form at plate boundaries.
B. Different continents have fossils of the same animals and plants.
C. The shapes of coastlines of different continents appear to fit
together.
D. Earth has a very thin crust and a very thick mantle.

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.