Their years fly by quicker maybe.
Answer:
In an ecosystem photosynthetic plants act as producers wheres other organism act as consumers.
Explanation:
Green plants undergo photosynthesis to produce their own food as a result they are called producers and are placed in the first tropic label of energy pyramid.
The other organism that intake green plants are called primary consumers for example grasshopper. The primary consumers are placed in the second tropic label of energy pyramid.
The other consumers are termed as secondary consumers or primary carnivores that feed on primary consumers For example Snake because it eats grasshopper and is placed in the third tropic label.
Finally the tertiary consumers or secondary carnivores consumes secondary consumers to intake energy from them.For example Hawk eats snake,as a result hawk act as secondary carnivores and are placed in the top of the energy pyramid.
Answer;
Medulla.
When you run to catch a ball, your movements are planned and controlled from the Medulla.
Explanation;
The Medulla directly controls certain autonomic (involuntary) responses, such as heart rate, breathing, blood vessel dilation, swallowing, sneezing and vomiting.
It is located in the brain stem, anterior to the cerebellum.
D. Convection heat transfer is<span> caused within a fluid by the tendency of getting hotter and that causes less dense material to rise and colder material to sink caused by gravity, which results in convection heat transfer. Hope this helps </span>
