Although the cave fish have non functional eyes, it can see in the darkness of the cave and it catch their prey by contracting their mouth, thereby producing suctions that trap its preys. Thus, the cave fish expanded other sensory organs to make up for their sight less eyes. Also, cave fish, can only hear lower frequencies noises. The noise in the cave is always above this, thus the cave fish has developed the auditory adaptation of filtering out background noises in its environment.
Answer:
A hypothesis is an educated guess about something in the world around you. It should be testable, either by experiment or observation.
For example: A new medicine you think might work.
Explanation:
The correct option is this: PIONEER ORGANISMS MOVE INTO NEW COMMUNITIES FIRST.
Ecological succession refers to the process of change that occur to the species in a given community over a period of time. Succession is caused by change in the environment and its effects on the living organisms that are living there. There are two basic type of ecological succession, these are primary and secondary ecological succession.
Primary ecological succession typically occur in an environment that is devoid of any form of vegetation or life form; it is usually a bare land that lack soils that are needed for plants' growth. The first set of plant that grow in this kind of environment are called pioneer species. Such plant usually have ability to survive in harsh environment. Example of such plant is ferns. Primary succession is very slow and can take hundreds of years.
Secondary succession usually occur as a result of an event which reduce an established ecosystem into a smaller population. The event could be a forest fire, flooding, etc. Secondary succession takes place in an environment in which some living organisms are still existing. The process is fast compared to primary succession.
We will all die because we need oxygen that the plants give is
Rickets is caused as a result of vitamin D deficiency. The role of vitamin D in the body is its significance in the absorption of phosphorus and calcium from the gut. Consequently, phosphorus and calcium in the blood is absorbed in the extracellular matrix of bone hence giving them strength. Therefore, deficiency of vitamin D results to soft bones that are a symptom of rickets.
