Some frogs, when sitting, can absorb all the oxygen they need through the skin.

Only when they move do they start to breathe.

Explain these observations.

As you look under a microscope you see a nucleus with a large density of nucleolus. What inference can you make about that cell? As you look under a microscope you see a nucleus with a large density of nucleolus.

Secretion of which hormone is controlled by a positive-feedback mechanism? Progesterone Testosterone Oxytocin

How can the arrangement of furniture in a room influence an individual's behavior? a. The arrangement of furniture in a public room can either encourage or discourage social interaction. b.

In the following food chain, which organism receives the least amount of energy? plankton ⇒ shrimp ⇒ fish ⇒ seal A. plankton B. shrimp C. fish D. seal

Identify 2 things that can cause mutations. A) death B) exact copy of healthy DNA C) mis-copying D) damaging effects of radiation

Question 3 What major explanation did Charles Darwin provide? He explained how DNA is passed on but did not have evidence of it occurring. He was the first to provide an explanation of evolution supported by evidence.

There are several disadvantages for asexual reproduction, what would be an advantage

Explain the concept of sustainable use

An object that does not transfer heat easily, such as wood, is called an A) metal B) conductor C) insulator D) capacitor

In which phase of meiosis does the chromosome number change from diploid to haploid? Prophase I Anaphase I Prophase II