Answer: Response to the environment.
Explanation:
Living organisms respond to their environment, and this <u>response to stimuli is an important characteristic of life, because it helps the organism to stay in balance</u>. Anything that causes a living organism to react is called a stimulus, which can be external or internal.
The effectors produce an appropriate response to the stimulus in order to maintain homeostasis within the organism.
Ultraviolet light can damage the DNA in cells, causing mutations. So, once the skin is exposed to sunlight, the organism tries to cover all the cells with melanin, which block UV rays.
The scientist should compare the anatomies of the fossil and present day dragon fly to determine the relation between the two.
Explanation:
- Diet is a common factor between many species,i.e. Different animals can have same died for example there are several grass eating species so this will not establish a close relation between the two.
- A single habitat can be occupied by different species , for example a grassland can be the habitat of lion, zebra , various insects etc. Secondly, getting a clear idea about the habitat of a fossil specimen is difficult and can be hypothetical. Thus, this is not a criteria to be compared.
- Different animal can have same predator, for example, a zebra, a deer and a nil gai have lion as the predator. Again determine the predator of a fossil specimen is very difficult and might lead to a hypothetical conclusion. Thus predators are also not factors of comparison here.
- The Anatomy of an organism is quite similar to its ancestor, the structural plan of the body can easily be compared. For example the anatomical features of man and apes are closely established. Thus, Comparing the anatomy will determine the closeness of the give species.
Socioeconomic factors are directly proportionate to the quality of prenatal care.
The formula to calculate population density is C. # of organisms in a region divided by land area.
Or # of organisms ÷ Land Area
Hope this answers ur question & helps!
