Answer:
c) Organisms within a population vary, and all populations produce more offspring than can be supported by the environment, resulting in competition for survival within the population.
Explanation:
Darwin's theory was based on the evidence of natural selection and survival of the fittest.
Evidence of Darwin's theory were observed from the variation in the population which is supported by the environmental factor (natural selection) and these population than produce offspring, resulting in competition for survival within the population (survival for fittest).
Hence, the correct option is "c".
Explanation:
Some chromosomal conditions are caused by changes in the number of chromosomes. These changes are not inherited, but occur as random events during the formation of reproductive cells (eggs and sperm). An error in cell division called nondisjunction results in reproductive cells with an abnormal number of chromosomes
Chromosome abnormalities often happen due to one or more of these: Errors during dividing of sex cells (meiosis) Errors during dividing of other cells (mitosis) Exposure to substances that cause birth defects (teratogens)
Answer:
False.
Explanation:
Note that, osmosis is considered as the passive movement of water because,it involves the movement of water from a region or area where concentration is high to the region or area of low concentration. This is the reason why it is compared to or described as a type of diffusion.
This process is known as passive transport or passive movement of water. And it is known to be water specific process.
That is why it can be compared to diffusion of ions or other small molecules in physics.
Answer:
As given below.
Explanation:
1. The transform boundary is that of the San Andreas fault in California.
2. The divergent boundary is an example of the pacific ocean that is shrinking due to the opening of the Atlantic ocean.
3. The continental-continental convergent boundary is an example of the Indian plate and the Eurasian plate.
4. Oceanic-oceanic convergence boundary is an example of the Aleutian Islands in Alaska and the Japanese islands.
