Answer:
The theory begins with the continents beginning as one united land mass called Pangea. When the tectonic plates began to move these land masses apart the plants and animals that were on them were separated around the world, but they all began on the same land mass so that is why they are so similar.
Answer:
Diffusion is the movement of molecules from an area where the molecule is in high concentration to an area where the molecule is in lower concentration. ... Facilitated diffusion is the movement of a molecule from an area of high concentration to an area of lower concentration with the help of a protein channel or carrier.
Explanation:
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Answer:
crust and outer part of the mantle
Answer:
Variation, Overproduction, Adaptation, Descent with Modification
Explanation:
Variation: Heritable differences that exist in every population are the basis for natural selection.
Overproduction: Competition between offsprings for resources.
Adaptation: a trait that helps an organism survive and reproduce
Descent with Modification: Natural Selection will result in species with adaptation that are well suited for survival and reproduction.
Answer:
Explanation:
Which of the four types of macromolecules, and in which proportions, are present in this food sample?