They should study about how volcanoes erupt or explodes
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
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.
Hello There! ^_^
Your question: Which one of the following times would be the longest..?
You answer: The Paleozoic Era would be the longest time span.
the answer is option B.
Hope this helps!
