Answer:
The ecosystem that consists of a producer and consumer is a decomposer
Explanation:
- The ecosystem comprises a number of producers, ad decomposers. The producers belong to the bottom of the food chain and they are divided into primary and secondary such as plants and herbivorous animals like grass and deer.
- The secondary environment consists of consumers that are also divided into primary and secondary that is wolves and Man.
- The decomposers are the last in the food chain that acts of dead and decaying reasons and converts the nutrient energy into the soil that is take up again by plants.
The development of agriculture was set in motion by hitching animals to the plow. The correct option among all the options that are given in the question is the second option. At the beginning, people did not use animals for agricultural purpose, but with passing of time the utility of the animals for agriculture was understood and it made cultivation easy.
Answer:
<u>Oxygen</u> is the most abundant non-metal found in the Earth's crust.
Explanation:
The most abundant of the other nonmetals in the Earth's crust is oxygen which is the single most abundant element in the Earth's crust.
Water is also made up of the two nonmetals oxygen and hydrogen in which we found Oxygen the most abundant.
