Answer:
C) 34%
The other two samples are-
Gravel- D) 38%
Silt- B) 53%
Explanation:
To find the porosity of the sample, you do (volume of fluid)/(volume of substance) X 100. We were given a 300mL sample of sand, and 400 mL of water. You must also take account of how much surface water is found, which you add to however much water you put into the 300mL sample.
Gravel has the highest permeability, and silt has the lowest.
Answer:
Option (C).
Explanation:
Breast are the two prominences present on the upper region ventrally, present in the primates. These breast serve for the mammary gland. The estrogen and growth hormone causes breast development in females.
The primary function of the female breast is the production of milk by the process of lactation. These breast are used for feeding the young ones. The blood vessels are present in abundant supply in he breast.
Thus, the correct answer is option (C).
Answer:
C. requires the restoration of ecosystems better designed to serve the needs of humans
Explanation:
For a very long time, the survival of plants and animals has been dependent on each other. The plant depended on animals for oxygen and the animals depended on plants for carbon dị oxide.
In recent times, this balance has been altered as humans (higher animals) have started engaging in activities that hurt the ecosystem such as Bush burning, deforestation and other agricultural practices.
In view of this, there is an urgent need for the restoration of ecosystems that suit human needs. This can be done by planting of more trees, reduction in industrial activities that involves emission of harmful gases and wastes into the air, land and water.
I think it is C (meiosis)
