If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, what is the most probable cause?

A. Insufficient calories

B. Overhydration

C. Dehydration

D. Lack of protein

If a scientist observes a protist that is moving and determines it is heterotrophic, he or she can then hypothesize that the protist belongs in which group of protists? A Plant-like B. Fungus-like C. Animal-like D. Virus-like

What does deforestation mean?

3TC is an antiretroviral treatment used to prevent HIV infection from becoming AIDS. After treatment with 3TC, the HIV population in a patient consists entirely of 3TC-resistant virus particles.

Which of the four factors that affect evolution applt to the fenches that the Grants studied?

In bees, the female queen bee is diploid but male bees are haploid. The fertilized eggs develop into female bees and the unfertilized eggs develop into males. How might gamete production in male bees differ from normal meiosis

What type of tissue is specialized to become stretched or distended?

Which of these statements is true of scientific theories A. They are the beginning of research B. They are the last step in an experiment C. They can change over time D. They can never be proven wrong

Which country has the largest forest areas? A) United States B) Brazil C) Canada D) China E) Argentina

How do proteins play an important role in the mating of japanese beetles? a. by storing lipids for future use by the reproductive cells b. by making hormones that increase the drive to mate c.

Explain the current and predicted impacts of human activity on atmospheric carbon dioxide levels and Earth's temperature.