<u>Answer:</u>
<em>Biomagnifications largely affects the organisms at the highest trophic level.
</em>
<u>Explanation:</u>
The increase in concentration of toxic chemicals while moving up in a food chain is called biomagnification. What starts out as a small concentration at the lowest trophic level turns out to become a <em>higher concentration at higher trophic levels. </em>
Thus it is the organisms at the highest trophic level that are the most affected. This accumulation occurs because the organisms have not evolved enough to posess mechanisms that <em>facilitate detoxification of various substances. </em>
Such substances are called novel substances and DDT is an example. Removal of substances like metals is also difficult. Thus a harmful chemical component travels up various trophic levels increasing in <em>concentration at each trophic level.
</em>
Answer:
Explanation: Natural selection is a cause of evolution. So over time, organisms can start to evolve due to artificial selection. Natural selection, sometimes referred to as "survival of the fittest," is a mechanism for the evolution of a population to become better adapted for survival in a specific environment. This means that organisms with traits that are best suited for the environment will pass these traits to their offspring.
Answer:
A mixture is a combination of two or more substances which are bound chemically. Identities of each substance is retained in the mixture.
Solid-solid mixture is sub-type of mixture which are formed by mixing two or more solids.
For example, soil (mixture of sand, silt, clay etc), gun powder (mixture of carbon, potassium nitrate, sulphur), etc.
Similarly, in class various solid mixtures are found such as:
- Chalk is mixture of calcium carbonate, silt and clay.
- Concrete is a mixture of cement, lime, sand, rocks, and water.
- Stationery such as pen, pencil, sharpener, etc also come under solid mixtures.
- Alloys are also considered as homogeneous mixture. So, bronze, brass etc found in electrical appliances are also an example of solid mixtures.
Answer:
First, third, and fifth are the answers. Glucose is broken down into carbon dioxide and water. Light energy is absorbed by chlorophyll. Energy is used to convert carbon dioxide and water into sugar.
Explanation