The answer is A. The main driver of the convention in atmospheric
circulation is the suns energy. When the sun heats the earth, the atmosphere directly below the sun gets heated more
and faster compared to other regions causing an area of low pressure. This hot
air mass rises and is replaced by cooler air masses (from high-pressure regions)
from neighboring regions. This, essentially,
causes winds and air currents.
crop rotation mitigates the buildup of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by increasing biomass from varied root structures. Crop cycle is used in both conventional and organic farming systems.
it separates the inside of the cell from the environment outside and it controls substances moving in and out of the cell (selectively permeable)
The reproductive parts of an angiosperm are located in the flowers. A flower of an angiosperm usually consists of four whorls namely calyx, corolla, androecium and gynoecium.
