Answer:
the answer is parasitism
Explanation:
the parasite benefits by taking nutrients, and the other is losing it.
They built dams which enabled them to control the flow of water and conserve water for future cases where a drought comes. So far it has been useful even though dams can be controversial because of natural habitats of animals that usually get affected.
If inhibiting thyroid hormone release with PTU (propylthiouracil) in an experiment, the <u>experimental</u> group receives PTUand the <u>control</u> group receives no PTU.
<h3 /><h3>What is propylthiouracil (PTU) used for?</h3>
Propylthiouracil is used to treat Graves' disease and hyperthyroidism, a condition where the thyroid gland produces too much thyroid hormone.
To know more about thyroid :
brainly.com/question/2469666
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Archean and Proterozonic which are both broken into early middle and late periods