Answer: C. scorpions have changed as a result of natural selection
Explanation:
The text tells us that scorpions today are now smaller than they were in the past. This means that the scorpions have changed since then i.e. they have evolved.
The primary reason for evolution is natural selection which refers to a situation whereby only the organisms that are better adapted in their species survive.
The conclusion that can be drawn from this research therefore is that we have smaller scorpions today because they stood a better chance of survival than the larger ones and so survived whilst the larger ones died out.
Answer:
the cell will eventually be replaced
Explanation:
it will be replaced since the specialization of a multi celular organism is that they live longer than the single celled organisms
Answer:
Option (A).
Explanation:
Infection may be defined as the invasion of pathogens into the body's tissue of the organism. Various organisms like bacteria, fungi, virus and plasmodim can acts as a pathogen for the organism.
The secondary infection may be defined as the infection that occurs after the treatment of the previous infection. This infection may occur due to the changes in the immune system or by the treatment of the previous infection.
Thus, the correct answer is option (A).
Answer:
Coral Bleaching
Explanation:
"When water is too warm, corals will expel the algae living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality."
- NOAA's National Ocean Service
Hope it helps!
