The question, which is what the researcher wants to know, could be the following: <em>What is the effect of the change in </em><em>available</em><em> </em><em>food</em><em> </em><em>sources</em><em> on the</em><em> birds' feeding habits</em><em>?</em>
<h3>What are the steps of the scientific method?</h3>
There are different steps to follow in a scientific method
- Definition and problem statement. The question for which there is no answer yet. A question the investigator wants to answer.
- Goal specification. The goal is what the investigator wants to know.
- Hypothesis formulation. The researcher hypothesizes in order to predict what is going on or what is expected to occur.
- Experiment. Different variables influencing the project are considered. Data collection and analysis stages. This step involves testing the observations.
- Discussion and hypothesis verification. This step involves the deriving of the working hypothesis.
In the exposed example, the experiment involves watching the birds feed, and then removing fruit to simulate an environmental change.
The independent variable here is the food source availability.
The dependent variable is the birds' response to the change.
The question, which is what the researcher wants to know, could be as follows,
What is the effect of the change in available food sources on the birds' feeding habits?
You will learn more about the scientific method at
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Answer:
d. Pancreas
Explanation:
The digestive system structure which releases sodium bicarbonate into the small intestine, resulting in a change in the pH of chyme from acidic to basic is called the pancreas. It makes use of the pancreatic duct in releasing the bicarbonates into the small intestine.
The bicarbonates aids the digestive processes and also neutralizes the duodenum from acidity. This is due to the the acidic food from the stomach and is as a result of the stomach being acidic and having acids such as dil. Hcl.
Answer: (B) shared, derived traits.
Explanation:
In phylogenetic systematics, which presents itself with a character that eventually changes in descent, and presents itself with variations, which subsequently convert in the next generations. In this way, the character presence is not unique to the ancestor, but also in all heirs, however with a possible variation. This new variation or new character state is recognized as a derived condition, arose from the change in the state of the ancestral character. A derived condition has the potential to serve as a determinant for defining a new group is called apomorphy. An apomorphy can be unique to a group and is called a case of autapomorphy, or when it is shared by two or more groups it is called synapomorphy.