Answer:
In biology and ecology, a resource is a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. For plants key resources are light, nutrients, water, and place to grow. ... For animals key resources are food, water, and territory.
Answer:
mostly likely its that the universe may continue to expand
reason: Its a theory called the Big Bang theory that basically tells us about the existence of the universe and how it has formed things in our universe such as galaxies and is still expanding today also it's a Law called Hubble Law that says the greater the distance of a galaxy from us the faster it recedes which also shows proof of universe expansion
Answer: Carbon
Explanation:
Carbon is a chemical element which exhibit an atomic mass of 12. It is a nonmetal. Carbon is the key ingredient which is present in all the organic molecules. As it is abundantly available in nature. It exists on earth in the form of solid, liquid and gas. It is present in the biomolecules such as fat, proteins and carbohydrates.
On the basis of the above explanation, the carbon is the element which is present in all organic compounds.
Hydrogen fuel works on the principle of making water by H2 and O2 !!
At the cathode (negative electrode): H2(g)-2e →2H+(aq)
At the anode (positive electrode): 4H+(aq) + O2(g) + 4e– → 2H2O(g)
* As there is no harmful gasses evolve, and only water is formed so these cells are clean and healthy to use !!
(ADDITIONAL)
and remember these are 90-98% efficient !! as compare to petrol or diesel that are 50-60% efficient !!
Hydrogen fuel cells are used in Space programs to make pure water and other purposes !!
The answer is A. It is true
Living organisms found in nature react and live with one another in a variety of ways.
Commensalism is the relationship between organisms that interact in nature in what is termed as a symbiotic relationship. One type of symbiosis is commensalism where one organism benefits while the other species involved neither benefits nor is harmed The benefits of one organism can be in a variety of forms including food, shelter transportation and seed dispersal.
Types of commensalism include Chemical commensalism, inquilinism, metabiosis and phoresy
