The correct answer is (b) Levees prevent rivers from flooding their banks.
Levees are formed when water pushes the sediments to the side of a river. They serve as a natural barrier and prevents flood. This is very beneficial in terms of human settlement. Levees can be natural or artificial. They prevent water from going into the areas where there is a human settlement (bank of river). They prevent the rivers from flooding cities in a storm surge. If levees are broken the result can be disastrous for the surrounding area.
The answer is: B; the diffusion gradient in cell B is steeper
Cell B actively converting oxygen to water in cellular respiration, therefore the oxygen concentration would be much less when compared to oxygen concentration of cell A.
Diffusion will allow molecule to move from container with higher concentration to container with lower concentration. The difference in concentration will increase the speed, so the speed of oxygen diffusion to cell B would be faster.
Answer:
C. 1,024
The answer can be worked out using 2^pairs of chromosomes
Explanation:
Imagine there were <u>two</u> pairs of chromosomes:
- A paired with B
- C paired with D
A gamete could have the following combinations:
Therefore, with two pairs of chromosomes, there are 4 (2²) possibilities
Now, Imagine there were <u>three</u> pairs of chromosomes:
- A paired with B
- C paired with D
- E paired with F
A gamete could have the following combinations:
- A + C + E
- A + D + E
- A + D + F
- A + C + F
- B + D + F
- B + C + F
- B + C + E
- B + D + E
Therefore, with three pairs of chromosomes, there are 4 (2³) possibilities
For 10 chromosomes - there are 2¹⁰ possibilities. 2¹⁰ = 1024
Treat the liquid as if it is hazardous. Inform your teacher/instructor so you will be notified of the proper disposal technique.
