Answer:
is the spread of something more widely
Explanation:
Answer:
Option A
Explanation:
Only an autotrophic species can convert methane into food.
Deep below the sea, methane and hydrogen sulfide are found in abundance. These gases get mixed into the sea water.
Autotrophic bacteria containing phosynthetic pigments oxidize these dissolved gases thereby producing food.
Hence these autotrophic bacteria’s will be considered as producers as they produce food.
Thus, option A is correct.
The answer is protect the body from infection by pathogens
The physical barrier is made of epithelial cells, mostly will be keratinized to increase their sturdiness further. They will impede the pathogen physically by barricading the cells, makes the pathogen could not invade deeper part of the body. Histamine and antibodies should be the role of immune cells, not epithelial.
Answer:
The correct answer would be meiosis.
In diploid organisms, meiosis is the process that results in the formation of four haploid daughter cells from single diploid parent cell. Each of the daughter cell contains half the number of chromosomes present in parent cell.
It results in the formation of haploid gametes (sperm in males and eggs in females) which is essential in the process of sexual reproduction.
The fusion of gametes results in the formation of diploid zygote that is, maintains the diploid nature of the organism.
Hence, in absence of meiotic division the chromosomal number would keep on doubling after each generation.
In addition, crossing over (exchange of genetic material between non-sister chromatids) also takes in the prophase-I of meiosis I. It increases the genetic variation within organisms of the species. It may add survival adaptations to the population.
<span>First, we need to clarify what negative feedback means. Negative feedback is a response that is fed back to the input and that tends to reduce the fluctuation of the output. Negative tries to confer stability to the system. So, you can see that the option B. cannot be because if you add more wood to a fire the fire will increase instead of extinguish. The option A implies a signal (from the high temperature) that starts the air conditioner, so it brings the system out of the equilibrium. The option C. indeed signals that the "full" signal es fed back and the organism will stop eating and so it reaches equilibrium. The answer is the option C. not eating any more when you are full.</span><span />
