Answer:
A.
Explanation:
For the hydrophilic molecules (such as ions, carbohydrates, proteins, amino acids, and nucleic acids), they require active diffusion in order to pass through the cell membrane because of their polarity and because they are hydrophilic (most non-covalent assemblies of the cell membrane are hydrophobic).
Answer:
Answer:
e. Nutrient runoff from agriculture fertilizers, manure, and urban sources, which leads to rapid algal growth and subsequent bacterial decomposition
Answer:
Explanation:
Run off from agricultural wastes which contain Nitrogen and Phosphorus are the major sources causes dead zones.The process where these chemical get washed into the aquatic bodies is called Eutrophication.
These substances leads to algae boosts in the water.The increases population of the algae consumes the available oxygen in the water, therefore making the oxygen concentration drops or no oxygen at all;(Hypoxia)
As the algae population feed on the available resources in the water they exhausted this,and later die.
When the decomposing bacteria used the oxygen in the water to breakdown the dead algae they make use of the available oxygen.This further reduced the oxygen availability and therefore reduces the oxygen and hence the zone becomes the dead zone, because little or no oxygen is available for survival of organisms.
This is reversible if the process if europhication or other causes is eliminated
Explanation:
Explanation:
Answer: they allow air to enter lungs and also permits air into the body
Explanation:
Answer:
30 degrees;
30 degrees
Explanation:
Coral reefs are formed when the skeleton of the corals merge and combine with each other. The formation of coral reefs takes many years . Corals are the organism living in the ocean. They live in dense colonies and clusters. Coral reefs provides an ecosystem for other marine organisms to live in. The species live in the coral reefs and maintain their population. Corals live in the region of the ocean that has warm water and between the latitudes of 30 degrees North and 30 degrees South.
Answer:
Hey brainer! Brownian Motion is the random motion of large particles caused by the motion of the much smaller molecules that are all around them. In the case above, the circles you see are the fat globules in milk suspended in water as viewed through a web-cam down a microscope. The globules vary in diameter from 0.5 to 5 micrometres. The water in which they are suspended is made of H2O molecules with are typically 0.0003 micrometres across. The picture below tries to capture scale – but I haven’t managed to draw the water molecules small enough. Brownian motion is the jiggling of the gigantic fat globules due to the motion of the tiny water molecules.
Hope This Helps!
