Answer:
The correct answer would be - Hydrangea plants depend on the concentration of some element which is affected by the acidic or basic nature of the soil.
Explanation:
Hydrangeas plants produce two different type of flowers blue and pink. The color of the plant depends on the pH of the soil or the acidic or basic nature of the soil. If the pH of the soil is acidic which means 5.5 or less the color of the flower would be blue and if it is near or above the 6.5 flowers would be pink.
So, it is clear that the concentration of any element that affected by the pH of the soil is responsible for the color of the flowers, in this case, it is found that the concentration of aluminum ions (Al+++) in the soil. When the soil is alkaline less concentration aluminum available for the plant and more available to the plant when the soil is acidic.
The color of hydrangea flowers is influenced by soil pH, with acidic soil producing blue flowers, and neutral to basic soil producing pink ones.
The information given about hydrangea plants and the color of their flowers is an example of how environmental factors can affect biological characteristics. Their flower color is determined by the soil pH. Acidic soil with a pH of 5.5 or less triggers the hydrangea plants to produce blue flowers, while soil with a neutral to basic pH of 6.5 and up causes the flowers to be pink.
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B) Stasis occurs when the structure of a species in the fossil record does not change over a long period of time.
C) Not all organisms become fossils. Processes like erosion and mountain building can change rock layers, causing fossils to be spread over multiple layers or destroyed.
D) The adaptive radiation of mammals helps explain a rapid increase in mammal diversity of the fossil record after a mass extinction.
Answer:
C
Explanation:
Organisms that existed million years ago were mostly soft-bodied, thus they left no traces behind when they died. Due to geological processes such as soil erosion, whatever evidence left behind by these soft-bodied organisms was destroyed.
Answer:
B
Explanation:
go with your gut - Frank
B) low concentration of dissolved oxygen, and farming in the Midwest
C) high concentration of nitric oxides and burning coal to generate electricity in the Northeast.
D) low concentration of dissolved phosphates an Barge traffic on the Mississippi River