How were aztec chinampas constructed? (5 points) raised plots for crops were built on dry land with irrigation channels between them raised plots for crops were built from mud in the lake bed with canals between them raised plots for crops were built on dry land with canals between them raised plots for crops were built from depositing dry earth into the river bed with canals between them

Raised plots for crops were built from mud in the lake bed with canals between them

Explanation:

A chinampa is an ancient Mesoamerican method of agriculture and territorial expansion that, through a species of rafts covered with soil, served to cultivate flowers and vegetables, as well as to expand the territory on the surface of lakes and lagoons of the Valley of Mexico; making Mexico-Tenochtitlan a floating city. They used them for agriculture and gain ground in the lake waters.

It is a raft, frame made with trunks and rods, sometimes of considerable size, on which is deposited properly selected topsoil with biodegradable materials such as grass, litter, husks of different fruits and vegetables, etc. In the chinampa a willow was planted so that its roots grew from the water to the mainland on the banks of lagoons and streams, and after the willow grew, they sowed different crops which they later harvested.

It is a technique initiated in the times of the Teotihuacan culture, although its maximum development was achieved in the sixteenth century. By 1519, this technique, for example, occupied almost all of Lake Xochimilco, and its combination with other techniques such as irrigation by canals and the construction of terraces, made it possible to sustain a very dense population.

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth