A constant factor could be the dose of the drugs and the species of the rats used.
<h3>What is a constant factor?</h3>
In an experiment, a constant factor is one that is not allowed to change al through the experiment. This one must be held as the same and not allowed to vary. A constant factor could be the dose of the drugs and the species of the rats used.
The factor that would be different for the experimental group and the control group the administration of the new drug.
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There are five main fields of environmental science; each one created up of multiple smaller domains.
These five areas are atmospheric sciences, ecology, environmental chemistry, geosciences, and social sciences
<h3>What are three fields within environmental science that focus on non living aspects of the environment?</h3>
Climatology is the study of the Earth's atmosphere and climate. Hydrology is the reflection of Earth's water resources.
Earth science is the analysis of the Earth's nonliving systems and the planet as a whole.
Thus, These five fields are atmospheric sciences, ecology, environmental chemistry, geosciences, and social sciences.
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Answer:
a. significantly lesser
Explanation:
The density of protists living in the hay infusion is significantly lesser than the regular pond water because protists likes to live in aquatic or any water bodies. Some protists float on the surface of the water making their own food like plants by using the process of photosynthesis. Aquatic environments are ideal environment for protists, which have cilia and flagella that allows them to move in the water in search of food..
