Answer:
The femur contains yellow marrow, but the sternum does not. The femur makes red blood cells, and the sternum makes white blood cells. The femur contains compact bone, and the sternum does not.
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Answer:
c) Organisms within a population vary, and all populations produce more offspring than can be supported by the environment, resulting in competition for survival within the population.
Explanation:
Darwin's theory was based on the evidence of natural selection and survival of the fittest.
Evidence of Darwin's theory were observed from the variation in the population which is supported by the environmental factor (natural selection) and these population than produce offspring, resulting in competition for survival within the population (survival for fittest).
Hence, the correct option is "c".
Westward expansion impacted American society in many ways between 1800 and 1860. <span>The westward movement began with the </span>territory<span> in 1803. This provided American's with the hope to “spread” democracy </span>around the continent<span>. Transportation evolved </span>and adjusted because the<span> westward </span>enlargement exaggerated.
<span>Westward </span>enlargement usually<span> had negative effects on the Native Americans. Native Americans were forced </span>to measure<span> on reservations. The buffalo, </span>a vital<span> resource, </span><span>experienced </span>fast<span> population decline. Military conflict between Whites and Native Americans resulted in </span>several<span> deaths.</span>
In meiosis, crossing over occurs so there an be a genetic variation in the offspring. Genetic variation is vital to survival. In mitosis, crossing over would be a bad thing because the daughter cells need to be identical. Identical meaning the same genetic code. Therefore, crossing over wouldn’t be a positive process in identical daughter cells.
A eukaryotic cell is much more complex than a prokaryotic cell. Eukaryotic cells usually make up more complex organisms and have organelles such as endoplasmic reticulum, Golgi apparatus, mitochondria, a nucleus, and lysosomes. A prokaryotic cell only has circular chromosomes and is much smaller than a eukaryotic cell. Most single celled organisms are prokaryotes.
