Living things consists of the organisms like the plants, animals, fungi, protozoa and bacteria. These animals vary in the complexity of the body and have different number of cells in their body. Organisms like the plants and animals are made up of several different kinds of cells. These organisms are called multi-cellular organisms. On the other hand, organisms like the baker's yeast (a fungi) and a plethora of bacteria are single celled organisms. They are called unicellular organisms. Hence we can say that the living things are made up of at least one cell.
The options for this question are:
- Requires genetic variation
- Results in descent with modification
- Involves differential reproductive success
- All of the above
Answer:
<u><em>The correct option is d) All of the above</em></u>
Explanation:
The theory of natural selection explains that genetic variations occur in organisms of a species. Those organisms which are better adapted to live in an environment are able to survive and pass on their characteristics to their offsprings, hence descent with modification. Through this phenomenon, evolution takes place with the passage of time. Natural selection favours survival of the fittest. Hence, all of the above statements are true.
Take India for example.... people use the bathroom and bathe in rivers!
Now lets say we look at the US our pollution comes from factories, trash that people dont throw away, fertilizers and many more... but the difference is, that in developed countries like the US our water is filtered.... And in India water is not safe to drink
There are both physical and biological limiting factors found in nature.
-Physical factors (abiotic factors) include temperature, water availability, oxygen, salinity, light, food and nutrients.
-Biological factors (biotic factors) involve interactions between organisms such as predation, competition, parasitism and
herbivory.
