Answer:
The type of food to avoid after any type of surgery are any fast food or foods high in fat and grease and microwave food (frozen items). Frozen items should be avoided and fresh items should be gotten.
These type of foods may make the individual feel nauseous, slows down recovery process due to the complex compound and may make digestion slower.
Medulla of oblangata (answer C) is part of the brain which is affected of the patient who complain of breathing problems . Medulla of oblangata is a vital center which control visceral activities such as breathing,heart rates,blood pressure, swallowing and vomiting.
Although not specified, I am assuming that you want to identify the different variables and groups of this case. To answer this, the different typical factors that make up an experimental set up include: 1) dependent and 2) independent variables; 3) controlled variables; as well as the 4) control and 5) experimental group.
The dependent variable in this case is: the size of the population. While the independent variable is: the habitat space. Controlled variables in this experiment include: type and amount of food, cleanliness of the aquarium, and water temperature. The experimental group are simply the fish being observed. There are no controlled groups in this case depending on your definition. Controlled groups are usually the reference point or standard in experimental setups but this experiment wants to look at the differences of the goldfish with each other and not necessarily to a one particular goldfish and hence no controlled group.
The dependent variable is called as such because it is the one that changes depending on the factors given and is usually the one being observed. The independent variable is named as such because it remains the same throughout the experiment.
Answer:
The sample a which is solid at 20°C is "Iodine"
The sample b which is liquid at 20°C is "Bromine"
The sample c which is gas at 20°C is "Chlorine"
Explanation:
Iodine : It starts melting at 113.7°C, so the solid sample found is the iodine. Iodine is present in both solid as well as in vapor state. Basically it is kept in closed jars. Only when it reaches the temperature above the melting point is starts melting.
Bromine: It is a non metallic element that is present in the liquid state, being a member of halogen group. It is heavy, mobile and dangerous reddish brown liquid. It is corrosive in nature, when comes in contact with human tissue and causes irritation in eye when comes in contact with its vapor.
Chlorine: In room temperature it is gas, as it has weak intermolecular interaction which fails to keep the molecules closely attached.
<span>The systemic study of natural world is called natural science. It is
concerned with the understanding of natural phenomena based on collected data,
knowledge or sense of experience by means of observation and experimentation. Natural
science is subdivided into two main branches: one is biological science or life
science which aims to study life and living organisms their function,
structure, evolution, growth, distribution and taxonomy second is physical
science which is also broken down into different branches, including Earth
science, astronomy, chemistry and physics.
</span>
