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4 years ago

The minimum intensity of a physical stimulus that can just be detected by an observer is called

Biology

1 answer:

Anna71 [15]4 years ago

7 0

Answer;

-Absolute threshold

Absolute threshold is the minimum intensity of a physical stimulus that can just be detected by an observer.

Explanation;

An absolute threshold is the smallest level of stimulus that can be detected, usually defined as at least half the time.

-It can be applied to any stimulus that can be detected by the human senses including sound, touch, taste, sight, and smell. For example, in an experiment on sound detention, researchers may present a sound with varying levels of volume. The smallest level that a participant is able to hear is the absolute threshold.

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Rainfall in 1.)_____ is abundant, with 2,000 to 2.) ______ millimeters of rain each year.

jenyasd209 [6]

Answer: 1. A: Coniferous 2. A: 10,000

Explanation:

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4 years ago

Limited resources contribute to evolutionary change in animals by increasing

Shtirlitz [24]

Answer:

Limited resources contribute to evolutionary change in animals by increasing Intra-specific competition.

Explanation:

Intra-specific competition means competition among the members of same species.

Individual of same species have same ecological niche i.e. how an organism is related with biotic and abiotic aspect of environment.

So they require same resources of their survival. When population of any species increases then there is high chance of intra-specific competition because of limited resources.

Intra-specific competition also determine the population size of species. For example, competition among shark rodents.

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4 years ago

During warmer parts of the day, fish will be found in deeper waters of a lake. Which statement best explains this phenomena with

Gennadij [26K]

Answer:

The statement that can best explain why during the warmer parts of the day, fish are found in deeper waters of a lake is that warmth lowers the oxygen concentration near the surface.

Explanation:

Organisms in any aquatic ecosystem require oxygen to perform their functions and survive. But the availability of dissolved oxygen in water, especially at the surface, can be affected by environmental temperature.

Warm temperature decreases the dissolution of oxygen in the lake surface water, encouraging fish to move to deeper areas.
Lower temperatures increase the dissolution and availability of water at the surface, so fish can be found closer to the surface when the weather is cold.

This behaviour of dissolution / availability of oxygen at the lake surface can be observed with seasonal changes or with temperature changes between day and night.

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3 years ago

What is indicated by two species having similar amino acids in the hemoglobin protein?

Anna71 [15]

Answer: The two species were Rhesus monkey and Human 
Hemoglobin protein is the iron containing protein found in the red blood cells which function by transporting oxygen through the blood stream from from the lungs to the tissues and it is important for survival. However, the two species that have similar amino acids in the hemoglobin protein were Rhesus monkey and Human because they were not far from others.

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4 years ago

The movement of water molecules through the environment is known as the

nevsk [136]

Answer:

osmosis

Explanation:

Movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.

6 0

3 years ago