Rise in temperatures, melting in the Arctic and extinction
<u>Answer:</u>
<em>C. constructed advanced irrigation systems
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<u>Explanation:</u>
The western religion expanded through the New Mexico from Arizona and through Colorado and other nations. There was a variety of Indian groups who practiced different cultural practices. However there was a group that dwelled in these regions called the Pueblo, they were given this name by the Spanish because they lived in villages and towns on mud building and thatched roofs.
The pueblo community was classified into three groups, and their main activity was the construction of irrigation systems as a way of living.
Answer:
A decomposer breaks down the organic matter, and a detritivore eats the dead organic matter.
That's the simplest way to put it, hope it helps.
<u>Answer:</u>
Ptolemy accounted for 'retrograde motion' in his model of the solar system by introducing smaller circles named 'epicycles'.
<u>Explanation:</u>
- According to Ptolemy, the Sun and the other planets in the Solar system orbited around the Earth.
- The Greeks were convinced that Ptolemy's earlier model did not provide for backward or the retrograde motion.
- Ptolemy thought over it for a while and theorized the possibility of 'epicycles'.
- According to Ptolemy, the planets that orbited Earth also orbited another smaller point.
- The smaller orbits followed by the planets while in motion around the Earth in a larger orbit were introduced by Ptolemy as 'epicycles'.
- Until Kepler proposed his models of the functioning of the Solar system, Ptolemy's models were considered the most relevant.
