It is nonliving because it is just more metal, except it is changing.
Answer: alpha
Explanation: Alpha particles are fast moving streams of positively charged particles that are shown to be Helium nuclei. They have a mass
number of 4 and an atomic number of 2 and a charge of +2. Alpha particles are represented as 4He2. When 238U92 becomes 234Th90, it emitted a helium nucleus 4He2. The equation for the decay is 238U92 ---> 234Th90 + 4He2.
Answer:
Basically, the Atrioventricular valves are Mitral and Tricuspid valves located between the atrium and ventricles. Their main functions is to “prevent the backflow of blood from the ventricles into the atrium during the ventricular contraction (systole).
Explanation:
Answer:
Let's start off with an example. Imagine a population of organisms—let's say, deer—with access to a fixed, constant amount of food. When the population is small, the limited amount of food will be plenty for everyone. But, when the population gets large enough, the limited amount of food may no longer be sufficient, leading to competition among the deer. Because of the competition, some deer may die of starvation or fail to have offspring, decreasing the per capita—per individual—growth rate and causing population size to plateau or shrink.
Explanation:
Answer:
Bryophytes, lycophytes, ferns, whisk ferns, and horsetails. (Ans. A)
Explanation:
Seedless vascular plants: They are defined as the plants which contains developed specialized tissues known as vascular structure for transportation of nutrients and water. They are known as higher plants because they include from flowering plants to conifer trees (growing seeds) to fern (do not grow seeds).
Seedless vascular plants are divided into four plant divisions:
1) Psilophyta
2) Lycophyta
3) Sphenophyta
4) Pterophyta
Seedless vascular plants includes horsetail and clubmosses, these plants are not producing flowers or seeds. Spores of these plants are very lightweight with the help of this they are disappearing quickly in the wind.
