The red and the blue parts of the visible spectrum are used by the plants for photosynthesis
Answer:
Contour interval in surveying is the vertical distance.
Explanation:
Normally there are different contour intervals for different maps.The size of the area considers the contour intervals. In each and every map on the right hand bottom side the contour interval is specified.Therefore a contour interval is difference in two elevation between the contour lines in a topographical map
A chloroplast is most likely to be found in a autotrophic protist
Answer:
The steel plow and barbed wire
Explanation:
It was in 1837 when John Deere, a blacksmith from Illinois invented a steel mouldboard plough that was strong enough to cut through the stubborn roots of the prairie grasses. This invention turned millions of acres of prairie land into fields for arable crops and grazing ground for huge herds of domesticated cattle. The starving Indians who were displaced resorted to slaughtering the bison in 1872 to 1874 that resulted in the decrease of its population from 7.5M animals to about 750 only.
