Metabolic rate is regulated by thyroid hormones. The hypothalamus secretes thyroid-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH). The TSH then stimulates the thyroid to release thyroid hormones. The diagram shows the thyroid hormone pathway, which is a negative feedback mechanism. Which would most likely occur if too much thyroid hormone is released?
The hypothalamus would not release TRH.
TSH would stimulate the thyroid.
The thyroid gland would increase in size.
The pituitary gland would secrete more TSH.

Simulating adaptations in a species in this activity, you will discuss in detail the adaptations in a species of rain forest plants. you will build a simulation that explains the changes in the traits of the plant population over 10 years. you will also establish a scientific explanation to justify the changes in the traits of the population, * time to complete: 1-2 hours part a an organism's adaptations are specific to its native environment. an organism that lives in a coniferous forest will have different adaptations compared to an animal that lives in a tropical rain forest. the following graphs show the temperature and precipitation throughout the year for two different forests: a coniferous forest in canada, and a tropical rain forest in belize. evaluate the graphs, and then explain why plants from these two ecosystems will have different adaptations. in your answer, explain the survival challenges that plants face in these two environments.

Which of the following is not a defining characteristic of plants?

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy