Unlike a mixture, a compound has a chemical formula that is always same.
The ecosystem is indeed huge, the one who are creating in the ecosystem are animals and plants both are the one who creates the ecosystem.
The interactions that occur between organisms in an ecosystem: Predation, parasitism and herbivory.
Predation - Predating another animal for a prey
E.g : Lions And Antelopes
Paratism - Some small things that lives with the host, it can harm the host or harm the parasite.
E.g: dogs and lice or bacteria and humans
Herbivory - animals that eat plants
e.g: Sheep And the grass
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Answer:
A
Explanation:
Each of the other options can change the land structure
Which of the following organisms is not nekton? a. Whales
b. Crabs (answer)
c. Sharks
d. Dolphins
Answer:
Nerve cells release chemical signals into synapses between them (short distance). They also transverse their lengths with an electrical signal that can result in signal travel along a series of cells (long distance).
Explanation:
Nerve cells release neurotransmitters in the synaptic cleft which are capable of affecting nearby cells such as other nerve cells and muscle cells. Neurotransmitter molecules include, among others, serotonin, acetylcholine, dopamine, norepinephrine and histamine. Moreover, the synaptic cleft is the space that separates a neuron cell and its target cell. On the other hand, neurons transmit signals through electrical impulses. Electrical impulses travel long distances in the body carried by axons of the nerves. Thus, nerve impulses connect the brain and spinal cord and they carry signals to different parts of the body.
