You can put wind energy propellers on the front of your car. This would be effective, as the high speed of the car would increase the rate of energy produced.
You could also have a metal rod slightly scraping the ground, and take the heat generated by friction to produce energy.
Hope this helps!
A portal of entry<span> is the site through which micro-organisms enter the susceptible host and cause disease/infection. Infectious agents enter the body through various </span>portals<span>, including the mucous membranes, the skin, the respiratory and the gastrointestinal tracts.</span>
Transport of a substance from the lumen (cavity) of an organ into one side of a cell and out the other side of the cell into the extracellular fluid is called <u>transcellular transport</u>.
The two routes of transport of substances across the epithelium of the gut are by transcellular method and paracellular method.
Transcellular transport refers to the transport of solutes across a epithelial cell layer through the cells. The best example is the movement of glucose from the intestinal lumen to the extracellular fluid by the epithelial cells. The epithelial cells use the active transport to generate the transcellular transport. Active transport refers to the transport of substances from a region of its lower concentration to a region of its higher concentration against the concentration gradient using cellular energy.
The answer is D, for when one tropic level is eaten by the tropic level above it, the tropic level is supporting the higher one. I. E. Rabbits are supported by the grass because rabbits eat the grass. Also, the grass population would be larger than rabbits, the rabbits larger than snakes, so on and so forth, so B is ruled out. B states that each population is larger than the one BEFORE it, but there is no way there would be more rabbits than grass. Also, there are both herbivores and carnivores in the food chain, so A and C are out. The best answer is D.
Answer;
The best contraceptive method for sexually active people not in a monogamous relationship is Condoms.
Explanation;
Contraception and fertility control are methods or devices that are used to prevent pregnancy. Contraception methods ,may be classified as; hormonal methods (such as combined hormones), barrier methods (e.g use of condoms), Intrauterine Device use, and Natural methods (such as abstinence). Condoms is a type of barrier methods of contraception that is best for sexually active people that are not in a monogamous relationship.
