The transmission of an impulse is made possible first by electric signals propagating within a neuron. Then, at the end of the axon called a synapse, chemical substances called neurotransmitters get released to transmit the message. These neurotransmitters then attach to chemical receptors in the following neuron.
Answer:
B. In an area where a glacier has retreated
Explanation:
Primary succession, starts at a lifeless area where it has been affected by lava flood and/or retreated glacier therefore the answer is B.
<span>tRNA - Transfer RNA: Brings amino acids to ribosomes during translation.
rRNA - Ribosomal RNA: With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.
<span>snRNA - Small nuclear RNA: With proteins, forms complexes that are used in RNA processing in Eukaryotas. (Not found in prokaryotes.)</span></span>
Human activities have altered various natural environments around the planet. Various lands are now fields where only one farm crop is cultivated, is an example of monoculture farming.
An agricultural method of growing or producing a single plant, crop, or a livestock species, breed, or a variety in a field of the farming system at a time is known as a monoculture. Hence, the correct answer is option D, that is, monoculture.
Bacterial pathogen can multiply quickly within a small space
