Answer: The correct answer is -
D) giraffes having increasingly longer necks over time.
Natural selection is an evolutionary mechanism that was proposed by Darwin.
According to this mechanism, organisms that are better capable of adapting to their changing environmental conditions, survive and increase their number through reproduction whereas other are eliminated from the population.
Example - Long neck of Giraffe, which is much elongated, lofty stature, that was beautifully adapted for browsing on the higher tree branches. This was an adaptation with slow and gradual change in the gene frequency as the lower vegetation was eaten by other animals. Due to this, giraffes had to search for other source (that was higher tree branches).
This is considered as a peculiar example of natural selection.
Homozygous traits are either a combination of the same two dominant alleles or the same two recessive alleles. A hybrid trait is also known as a heterozygous trait, and is the pairing of a dominant and recessive allele.
Answer:
Knowing that Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. The ecosystem will change if a new species is introduced to an unfamiliar ecosystem. If a new species of birds were to eat another animal that was supposed to be eaten by another. The food chain of the ecosystem would be changed drastically. Aka, it might make the lizards go extinct, and can possibly become abundant. Aka, overpopulating and creating havoc within the ecosystem. Thus, causing imbalance.
Explanation:
Generally the low pitched sound vibrates the basilar membrane close to its apex while high pitched sound vibrates the basilar membrane close to its base
Brain receives information at temporal lobe. Thus, high and low pitched sounds are received at the higher and lower part of the temporal lobe.
Answer:
The water cycle is a process in which water is lost from water bodies and then it again comes back to earth in form of rain. This is how I know it, but the explanation is correct.
Explanation:
See,
- Water from water bodies evaporates and becomes water vapour due to heat
- This then reaches high altitudes, where it condenses with dirt to create small droplets thingy
- This then creates a cloud, which on correct saturation with water, makes it rains.
This cycle goes on continuously creating a cycle which is termed the water cycle.
Hope it helps
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