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There are two possible answers:

1) There is less margin for error if enough of each species are used.

2) Invertebrates are less adaptable to change for survival, so the results obtained are often conclusively valid.

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Is copper a compound or element?

Copper is an element with the symbol Cu and atomic number 29. It is a pure substance made up of only copper atoms and cannot be broken down into simpler substances by chemical reactions, so it is not a compound.


How can high copper levels from birth control impact a person's health?

High copper levels from birth control can impact a person's health by potentially causing symptoms such as nausea, vomiting, and abdominal pain. In severe cases, it can lead to liver damage and neurological issues. It is important to monitor copper levels and consult a healthcare provider if experiencing any concerning symptoms.


3 What are the two major components of squid blood?

The two major components of squid blood are hemocyanin, a copper-containing respiratory pigment that transports oxygen, and hemolymph, a fluid that acts as both blood and lymph in invertebrates. Hemocyanin gives squid blood a blue color when oxygenated.


What is the chemical for killing tree roots?

Copper sulfate is a common chemical used to kill tree roots. It is typically applied directly to the roots or injected into the soil near the roots to inhibit their growth. It is important to use caution when applying chemicals to tree roots to prevent harm to the environment and neighboring plants.


How many colors of blood are there in living organisms?

There are two main colors of blood in living organisms: red and blue. Red blood is oxygenated and found in animals with iron-based oxygen carriers, while blue blood is deoxygenated and found in certain marine invertebrates with copper-based oxygen carriers.