Contaminated lands and environments cause health difficulties such as cancer, can effect the respiratory system, and problems on the skin.
The parasympathetic nervous system responds when the body is relaxed and at rest while sympathetic nervous system is responsible for response to emergency situation.
Explanation:
- The sympathetic nervous system is called fight or flight division while the parasympathetic nervous system is the rest and digest division.
- The pre-ganglionic neurons of sympathetic nervous system arises from lumbar and thoracic regions of spinal chord while the preganglionic neurons of parasympathetic nervous system arises from the brain and sacral region of the spinal cord.
- The sympathetic nervous system decreases the activity of digestive system while the parasympathetic nervous system increases the activity of digestive system.
- Sympathetic nervous system dilates bronchioles while parasympathetic nervous system constricts bronchioles.
- Sympathetic nervous system increases blood pressure while parasympathetic nervous system usually do not effect blood pressure.
- Sympathetic nervous system increases heart rate while parasympathetic nervous system decreases heart rate.
A production possibility curve shows all maximum possibilities of output for two goods. This curve oftentimes takes the form of a curve to the right. An economy that is coinciding with this curve is said to be efficient. However, if the economy is operating below the curve, then it is said to be inefficient.
Answer:
a variable (often denoted by x ) whose variation does not depend on that of another.
Explanation:
We can use a punnett square to predict the outcome of self-fertilization for the f1 hybrids of a monohybrid cross. In this case, the punnett square should be set up as a blank 2x2 square.
Self-fertilization is the joining of male and female gametes and/or nuclei from the same haploid, diploid, or polyploid organism. It is an instance of extreme inbreeding. These are 2X2 squares with four boxes for a monohybrid cross, with each box signifying a fertilization between the parent gametes.
Selfing is widespread, ranging from simple hermaphrodite plants and animals to multicellular organisms (especially invertebrates). Selfing occurs when two individuals (or their cell nuclei) that were produced by a previous mitotic division of the same individual interbreed in unicellular organisms like protozoa.
The Punnett square is a table that lists every conceivable result of a genetic cross between two people of known genotype. The Punnett square is a square that has been partitioned into four quadrants in its most basic form.
To learn more about the punnett square, here
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