Explanation:
A nerve cell or "neuron" is different because it has a more specialized structure of communication using synapses, axons, dendrites and chemicals that allow it to use an electrochemical communication method via neurotransmitters.
However, like "general cells" they too have membranes, nucleus etc
Answer:
"Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success.
Explanation:
The Darwinian evolutionary theory was created by Charles Darwin.
Darwin published his theory of evolution with compelling evidence in his 1859 book On the Origin of Species, overcoming scientific rejection of earlier concepts of transmutation of species. By the 1870s, the scientific community and a majority of the educated public had accepted evolution as a fact.
Because mostly some microorganism may be very small and harmful that can affect humans or animals just by the experience of the microorganism.
Microorganisms that are capable of causing disease are called pathogens. Although microorganisms that cause disease often receive the most attention, it is important to note that most microorganisms do not cause disease. In fact, many probably provide some protection against harmful microorganisms because they effectively compete with the harmful organisms for resources, preventing them from growing.
