Sensory receptors are found anywhere else in the human body and these receptors help us sense any stimuli from our environment. Within our body, there are thousands of these receptors and these us allow to sense touch, pain, pressure, heat, and cold. These receptors are classified according to complexity. Hope this helps.
- they release nitrogen in the air
- they make nitrogen chemicals which plants can use
- bacteria help to release chemicals from dead plants and animals
Recombination
: the process occurring in Meiosis I, in which offspring are able to obtain unique traits resulting in an array of different phenotypes (physical appearances).
Prophase I,
the homologous chromosomes line up in the middle of the cell and exchange segments of alleles, and then lining up in the cell in a NON-uniform way.... therefore resulting in genetically unique offsprings rather than identitical.
Mutations are result of evolutionary factors. They create genetic diversity that helps species adjust to different climates, behaviours and foods. Mutations that occur in a fit indivual can result in offspring that are genetically more successful in adjustments to different climates, foods, and environments.
All in all Recombination results in unique looking indivuals, whereas mutations result in greater survival chances of a species.
Answer:
c. saltatory conduction
Explanation:
An electrical impulse begins at the upper end of the neuron. This area is known as the axon ridge, and this ensures that the electrical impulse will travel in one direction only.
Through the myelin, the electrical impulse jumps from one node to another, instead of having to travel the entire distance from the axon. This type of signal conduction is called saltatory conduction.
Saltatory conduction speeds up impulse movement, as some axons may be up to one meter long. With this, the body achieves fast and efficient nerve conduction, and it is what allows you to react so quickly during reflexes.
The answer is C. It is naturally occurring
