Answer:
Active Transport
Explanation:
Active Transport requires energy input
Cytoplasm is the liquid-like substance inside the cell in which the organisms are encased.
Answer:
The efficiency of the hair dryer is 0.2 or 20%
Explanation:
The efficiency of a machine or any appliance is a measure of the useful work done by the machine when an effort is applied to the machine. The higher the efficiency of a machine, the more useful work the machine does.
Due to the economical and environmental impact of energy production, machines and appliances of high efficiency are being developed and recommended for domestic as well as industrial use nowadays.
In electrical appliances, energy is usually supplied by electrical power units. The higher the efficiency of an electrical appliance, the less power it consumes to do useful work. For a hair dryer which takes in 3000 J of energy per second and transfers 600 J of useful heat energy, its efficiency is calculated with formula below:
efficiency = useful energy / total energy input
Efficiency = 600 J / 3000 J = 0.2
Therefore, the efficiency of the hair dryer is 0.2 or 20%
Explanation:
slope(m)=tana,where a is angle made by particular line in x- increasing sense.for a=90, m becomes infinitely large which can be termed as undefined.
Answer:
a) Amphibians are tied to water for reproduction, while reptiles have amniotic eggs that can survive on dry land.
Explanation:
Amnion is the membrane surrounding the fetus. Animals that posses amnion are termed as Amniotes. Amniotes are tetrapods (i.e descendants of four-limbed and backboned animals) that are characterised by having an egg equipped with an amnion, an adaptation to lay eggs on land rather than in water
Amphibians reproduce sexually with either external or internal fertilization. Amphibians do not produce amniotic eggs, so they must reproduce in water.
Unlike amphibians, in reptiles production of amniotic eggs takes place. The shell, membranes, and other structures of an amniotic egg protect and nourish the embryo. They keep the embryo moist and safe while it grows and develops in mos dry lands.