Answer:
b. passive solar heating
Explanation:
Passive solar heating is a system designed to use solar energy (energy from the sun) for the purpose of providing electricity or heat. This system is used in households and offices to absorb, retain and supply heat to the desired location.
This system is termed "passive" because it does not require any external device for conversion of solar energy rather it exploits sun's energy directly. Hence, according to this question, PASSIVE SOLAR HEATING is the form of renewable energy that uses the sun's energy most directly.
Answer:
Stimulation of the parasympathetic nervous system results in: Construction of pupils. Decreased heart rate and blood pressure.
Explanation:
Answer:
<u>Two ureters.</u>
These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.
The correct answers are:
1. Lizards;
The animals started to develop traits that would protect them from the natural elements after the lizards. Because of the changes in climate, as well as changes in the functioning of the organism and developing from cold blooded to warm blooded, the animals started to develop feathers and hairs (later becoming a full body fur).
2. Jelly fish;
The Jelly fish is an organism that is very primitive. It has remained largely unchanged throughout the geological time and it seems like it hadn't any real reason to evolve further. It is also one of the oldest species that are still in existence, but also a species that is older even than the hagfish.
<span>The vertebrate nerve code is found dorsally while that of the crayfish is located ventrally of its body. Additionally, the ventral nerve cord of the crayfish is a solid ventral tube while that of the vertebrate is a hollow tube. All vertebrates are chordates, the dorsal nerve cord develops into nervous tissue of the brain and spinal cord; unlike the notochord which is the scaffolding for development of the bone and cartilage of the vertebral column. In the crayfish, they have a ventral nerve cord which is a collection of nerves found in the abdomen.</span>
