Answer:
Salmon populations in the United States is declining due to the following factors:
1. Over-fishing and human activities have put a major influence on the population of salmon.
2. Due to industrialization, urban growth, unplanned farming, deforestation, and pollution would have imparted strains on the stocks of salmon. Apart from this chemical contamination from the industrial run-off and agricultural activities are also declining populations of salmon.
3. Genetically modified fish from hatcheries usually escape and interbreed with wild fish, thus, changing the genetic features of the populations.
4. Construction of hydropower dams is also a major cause of the salmon population declining.
It could also result in what we call lactose and tolerance
Answer:
<u>B. Animals are always biotic components of an ecosystem. </u>
Explanation:
The living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms.
The Brain waves associated with REM sleep are most similar to those of stage 1 sleep.
The first Rapid Eye Movement sleep stage lasts around 10 minutes and usually happens after having asleep at least 90 minutes. At this stage the eye moves rapidly in all directions during Rapid Eye Movement sleep. Additionally during this stage powerful dreams usually happen.
Answer:
Peer Review
Explanation:
Peer review is a process where by, professionals or colleagues in a particular discipline with equal qualifications and abilities crosscheck the findings of fellow colleagues before the findings can be published. Peer review can be done in many disciplines. For example, we could have the medical, technical, and scholarly peer reviews.
Peer review is important because it helps to confirm the accuracy of findings and also provide a means to regulate the activities of scientific experts. Peer review is done anonymously, which means that the identity of those doing the review is not revealed. This would help to eliminate bias.
