Answer: The integumentary system is essential in maintaining homeostasis, a state of stability across factors like temperature and hydration, in the body. The integumentary system stores water and prevents dehydration as well as producing sweat to regulate temperature and rid the body of waste products
Explanation: Barrier protection and water transport can be demonstrated with a piece of fine cloth. Pour water with coarse sand in over the cloth. The sand (bad organisms) are kept out, but the water (sweat) can go through.
Insulation: Put a thermometer into a small block of styrofoam. Put the block on a piece of ice, and then in a cup of hot water and observe the temperature. That is how the skin helps to regulate body temperature.
Cooling: When we exercise a lot (running is good) we generate more internal body heat. Notice how exercise (work) or even just hotter temperatures in the cause us to sweat.
Measure the air temperature with a thermometer and a fan blowing over it. Then measure it again with the thermometer covered with a THIN wet paper towel. That is how our sweat cools our body by evaporation.
arsenic
Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).
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.
Answer: The correct answer to the question is option D
SPACE OBSERVATORY
SPACE OBSERVATORY uses electromagnetic radiation to discover the properties and composition of bodies in space.
Explanation: A space observatory (Example; Telescope) is simply an instrument that is used to observe distant galaxies, stars, planets and other objects in the outer space.
Findings from space observatory enhances our knowledge of the COSMOS as they can be recorded for after study.
