Which of the following types of galaxies are most spherical in shape?
"A" Spirals
"B" Ellipticals
"C" lenticulars
"D" Irregulars
THE ONE THAT IS NOT BOLDED IS YOUR ANSWER
Answer:
Astronomers used the cross-staff for measuring the angle between the directions of two stars. ... Ships' officers used it to measure the elevation angle of the noontime Sun above the horizon, which allowed them to estimate their latitude
Explanation:
Google
Answer:
Forms of carbon differ in the oceans.
Explanation:
Two different primary types of carbon exist in the oceans.
- Carbonates - organisms in the ocean absorb carbon dioxide and produce carbonates CO₃²⁻. Calcium and magnesium ions combine with carbonates to form <u>calcium carbonate</u> that make up the bulk of corals and seashells plus <u>magnesium carbonate</u>.
When atmospheric CO₂ dissolves directly into the seawater, carbonic acid is produced, that reduces the pH of seawater.
One of the earth's precious diverse ecosystems comprises of coral reefs. Coral reefs' body is made up of calcium carbonate. However, calcium carbonate acts as a buffer. That's why, as pH decreases, the dissolution of calcium carbonate (corals structure and seashells) increases. It results in a massive extinction of coral ecosystem.
Hence, we should not disturb the balance of nature.
The correct answers are:
<em>C) glaciers;</em>
<em>D) rivers;</em>
The glaciers, with their massiveness, sheer force and weight, are able to break down both, big and small parts of the rocks, thus eroding them. Considering that the glaciers are also moving, though slowly, they are transporting the eroded material over shorter or longer distance, depending on the length of the glacier itself.
The rivers, with their force and also with their chemical composition, manage to erode the rocks little by little, and than transport the eroded sediment. The transportation distance depends on the length of the river, as well as its speed.
Answer:
1. The purpose of the conquistadors was to conquer the ancient empires in the region of Central and South America. The first Spaniards who came to New World were the conquistadors, mercenaries, and soldiers who came for adventure as well as to make quick fortunes. The reason for the establish colonies in the New World was the glory, gold and God. Spanish invading the early empire and taking control over them by showing their glory, spreading Christianity became their reason for converting the Natives. Gold (silver) became their source for generating wealth in the New World.
2. The conquistadors were successful in colonizing Central America through invading the Maya Civilization. Mayan People were unable to defend themselves because of the spread of the diseases which killed somewhat the entire civilization who were not immune to it. Spanish weapons were superior to the Mayan who used bow and arrow, spears etc.
3. Hernan Cortes defeated the Aztecs in 1521 and claimed Mexico for Spain.
4. Central America countries speak Spanish because of the Spain occupation in the region by establishing colonies after the discovery of America in 1492.
