Answer: emigration or increase in death rate
Explanation:
Many factors can modify the animal population in a specific area.
Amphibian populations are affected mostly by changes in temperatures, altered dry season rainfall, and modified leaf litter depth.
Considering the options provided, only emigration and an increase in death rate could explain the decrease of the frog population.
Immigration and an increased birth rate would result in the population growing, not decreasing.
They excavated temples and tombs whose walls were covered with scenes of daily life.
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It says we will only get 5 points.
Tenochtitlan was the capital of the Aztec Empire. it was a busy and bustling city where there is daily more than 60000 souls, buying and selling and were are found all the kinds of merchandise produced in these countrys.
The Land Ordinance of 1785 was adopted by the United States Congress of the Confederation on May 20, 1785. It set up a standardized system whereby settlers could purchase title to farmland in the undeveloped west. Congress at the time did not have the power to raise revenue by direct taxation, so land sales provided an important revenue stream. The Ordinance set up a survey system that eventually covered over three-fourths of the area of the continental United States.[1]
The earlier Ordinance of 1784 was a resolution written by Thomas Jefferson (delegate from Virginia) calling for Congress to take action. The land west of the Appalachian Mountains, north of the Ohio River and east of the Mississippi River was to be divided into ten separate states.[2] However, the 1784 resolution did not define the mechanism by which the land would become states, or how the territories would be governed or settled before they became states. The Ordinance of 1785 put the 1784 resolution in operation by providing a mechanism for selling and settling the land,[3] while the Northwest Ordinance of 1787 addressed political needs.
The 1785 ordinance laid the foundations of land policy until passage of the Homestead Act in 1862. The Land Ordinance established the basis for the Public Land Survey System. The initial surveying was performed by Thomas Hutchins. After he died in 1789, responsibility for surveying was transferred to the Surveyor General. Land was to be systematically surveyed into square townships, six miles (9.656 km) on a side. Each of these townships were sub-divided into thirty-six sections of one square mile (2.59 km²) or 640 acres. These sections could then be further subdivided for re-sale by settlers and land speculators.[4]
The ordinance was also significant for establishing a mechanism for funding public education. Section 16 in each township was reserved for the maintenance of public schools. Many schools today are still located in section sixteen of their respective townships<span>[citation needed]</span>, although a great many of the school sections were sold to raise money for public education. In later States, section 36 of each township was also designated as a "school section".[5][6][7]
The Point of Beginning for the 1785 survey was where Ohio (as the easternmost part of the Northwest Territory), Pennsylvania and Virginia (now West Virginia) met, on the north shore of the Ohio River near East Liverpool, Ohio. There is a historical marker just north of the site, at the state line where Ohio State Route 39 becomes Pennsylvania Route 68.
