Answer: D. A forest fire
Disturbance is an event of extreme environmental stress that
happens in a short period of time and can largely affect the ecosystem in the
area affected. Disturbances may either be due to natural phenomena or man-made.
Answer:
Basically, observation can be defined as the action or process of observing something or someone carefully or in order to gain information, in other words, watching or analyzing something so as to know more about it. For example, if a biologist wants to observe the behaviour of a specific kind of animal in the wild, that person will have to watch and focus on what that animal usually do, what it usually eats, how it hunts or find food, etc, in order to know more about the animal itself.
The answer is C. Damage to the region of the brain causes difficulty in alternating between two tasks a condition called adiadochokinesia. Other symptoms include abnormal eye movements, slurred speech and weak muscles. Approximately half of all brain neurons are located in the cerebellum.
Answer:
Option (1)
Explanation:
According to the law of superposition, the rocks that are found at the bottom of an undisturbed sedimentary sequence are the oldest rocks as these layers are initially formed due to the process of deposition, sedimentation and lithification, and with progressive sedimentation, the rock layers that are formed at the the apex portion are the youngest rocks.
So, the fossils found in bottom rocks are the oldest fossils, and those fossils that are found in the top layer are considered to be the youngest fossils.
Thus, the oldest fossils are the ones that are found in the deepest strata.
Therefore, the correct answer is option (1).
