The best answer would be:
Unconditioned stimulus
In Pavlov's experiment on conditioning the food was the unconditioned stimulus that triggers a reflex or natural behavior. Think of it like something that makes you do something automatically.
For example, the food. When the dog smells food, it salivates. This is unconditioned because without teaching the dog, it automatically responds by salivating.
It would be called a biome, like a tundra or a desert.
Answer;
Carbon dioxide, water and light energy;
Explanation;
-Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves.
-Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy by the process of cellular respiration and may also be used to make other substances like cellulose and starch.
An electron microscope provides clearer, more detailed images than light microscopes.
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Organelles</h2>
that can be viewed under electron microscope are ribosomes, vacuoles, Golgi body, rough endoplasmic reticulum, smooth endoplasmic reticulum, mitochondria, nuclear membrane, nuclear pores, nucleolus.
Answer:
A test mating of organisms is called as the "cross"
Explanation:
This phenomenon is done where the genetic orientation is not known, of an organism whose genetic make up for a trait there determines to which the gene will be carried by the former. It is the cross between the homozygous recessive and with the corresponding suspected heterozygote to determine the genotype later. The organism which is crossed with another organism that is homozygous for the recessive trait and thus the offspring of the test cross are studied.