You suspect that changes in the hormone levels of a bird are causing it to sing more frequently. this is an example of a(n):
<u>proximate hypothesis</u>
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What is a proximate hypothesis?
An event that is nearest to, or directly accountable for, creating some observed effect is referred to as a proximate cause. This contrasts with a higher-level ultimate cause (also known as a distal cause), which is typically regarded as the "real" cause of an event.
Ex: What caused the ship to sink? A breach beneath the waterline allowed water to enter the hull, making the ship denser than the water that was supporting it, which prevented it from remaining afloat. The ship's collision with a rock, which tore a hole in its hull, was the ultimate reason.
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Environmental factors often influence traits independently of genes. Either of these effects can change the proteins that are made from a gene, which in turn affects traits.
How do environment and gene determine our personality?
Some genes increase the characteristic and others work to decrease the same characteristic-complex relationship among the various genes, as well as a variety of random factors, produce the final outcome.
Because of their genetic makeup, individuals differ in their responsiveness to the qualities of the environment. There are unique, genetically influenced reactions to particular experiences to which we are exposed.
The presence of drugs and chemicals in an organism's environment can also influence gene expression in the organism. The environment can affect morphological and physiological development whereas genes influence morphology and physiology, creating a framework within which the environment acts to shape the behavior of an individual.
Hence in this way, genes and environmental influences work together to determine our characteristics.
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C. Because ecosystems consist more of animals

- The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
Example : Fats
- functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses.
Example : Glucose
- Nucleic acids function to create, encode, and store biological information in cells, and serve to transmit and express that information inside and outside the nucleus.
Example: DNA
- .Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another.
Example: Keratin
<em><u>Hope </u></em><em><u>it</u></em><em><u> </u></em><em><u>helps</u></em>
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