Answer:
Ratio = 
Explanation:
Side of a cube, a = 20 µm
The surface area of a cube, A = 6a² (a is side of the cube)
The volume of a cube, V = a³
The ratio of the surface to volume ratio of the cell will be given by :
So, the ratio of the surface to volume ratio of the cell .
The correct answer is D. Stream erosions need water after all.
The tissues that are described as voluntary and involuntary would be MUSCULAR TISSUES or MUSCLES; with voluntary muscles having controlled by one's own will while involuntary muscles work without conscious control.
Answer:
True
Explanation:
Positive feedback is anything that increases or adds to something. Negative feedback is anything that decreases or takes away from something.
Answer: how changes in biodiversity impact an ecosystem
Explanation:
Water hyacinth is an invasive special that is introduced to an environment. It spread rapidly and causes enough damage to bother human,economy and environment.
Hyacinth pollutes the water causing a decrease in oxygen level and other nutrients like passport and nitrogen and it lead to high concentration of heavy metals and contaminant.
It can blankets the ocean causing a decrease in photosynthesis, boat trafficking, swimming and movement of organism in water bodies. It demostrates how changes in biodiversity impact an ecosystem.
