Question

which wavelengths of light are able to penetrate deepest into the ocean?
blue
purple
red
yellow
11
multiple choice 2 points
which of the following is not a benefit that can be gained from aquaculture?
reduced fuel consumption for commercial fishing vessels
requires less aquatic area to yield the same catch
fewer diseases for fish
stable income for fishermen

Explanation:

• Question 10: Blue light has a shorter wavelength and scatters less in water compared to other colors (red, yellow have longer wavelengths and are absorbed more quickly; purple is absorbed more than blue in oceanic conditions).
• Question 11: Aquaculture can lead to higher disease risks for fish due to crowded conditions (unlike wild - fish habitats which have more space and natural disease - control mechanisms). It can reduce fuel consumption (as fish are farmed rather than being fished from far - off areas), require less area for the same yield (intensive farming), and provide stable income (predictable production).

Answer:

1. A. blue
2. C. Fewer diseases for fish