An ecosystem<span> is </span>balanced<span> when the natural animals and plants and non-living components are in harmony- i.e. there is nothing to disturb the </span>balance<span>. With increasing pollution, change in migratory patterns, and rise of human population, many </span>ecosystems<span> are in danger of losing that harmony.</span>
Answer:
It depends on the temperature of the cookie sheet.
Explanation:
If the temperature of a cookie sheet is higher than the container used by Kennya, then the evaporation of water is faster because the water molecules quickly gains the kinetic energy that helps them in the evaporation while on the other hand, if the cookie sheet is not hot enough as compared to the container, the evaporation rate is slower but if both have same temperature so the evaporation is remain the same.
Answer:
I'll be your friend, and 2-2 is inevitably 0.
Explanation:
Percentage of human sperm cells carry an X chromosome is C 50%
Answer:
<em>The correct option is B) as the light colored moths were seen and eaten, the allele for dark colour became more prevalent in the population.</em>
Explanation:
The process of natural selection tends to favour those organisms which are better adapted to live in an environment. Evolution changes the allele frequencies of a population over time depending on the traits favoured by natural selection.
Before the industrial revolution, the colour of the trees was lighter and hence, the light coloured moths were better adapted to such environments as they could hide from predation. After the industrial revolution, the colour of the woods of trees became darker. The light coloured moths were no more able to hide from their predators and hence their population declined.
