Which of the following has caused 100,00 year cycles of ice ages in the past?

A. An increase in sun spots

B. Several major volcanic eruptions

C. changes in earths orbit and the tilt of its axis

D. continental drift

Cancer cells exhibit different behaviors than normal cells

2 Calcium Other Oxygen Which elements are the labels 2 and 3 most likely to represent?

Streamlining a car or boat can increase speed by decreasing friction. True or False

What does it mean to say that one species facilitates another species?

Which plasma protein is not correctly matched with its function? which plasma protein is not correctly matched with its function? globulins; body defense albumin; transport fibrinogen; transport albumin; osmotic pressure?

Where does food go after it leaves the small intestine?

How does the Sun contribute to physical weathering? A. When water is heated, it expands, which causes rocks to break. B. Minerals in rocks heat and expand at different rates, which causes rocks to break. C.

A phylogenetic tree shows that birds and crocodiles share many features. A hypothesis based on this tree predicts that these features are present in a common ancestor. Which of these predicted traits is supported by fossil evidence?

Imagine that you are talking with one of your friends about your biology course. He states that the somatic nervous system is subdivided into sympathetic and parasympathetic components, and is responsible for involuntary responses.

In both American cotton (Gossypium hirsutum) and Egyptian cotton (G. barbadense) petal spot is a dominant character over no petal spot.