1. Which nutrient tends to cycle within a single ecosystem?

O A water

O B phosphorous

O C carbon

OD nitrogen

What role do hypotheses play in scientific inquiry?

The contamination that results from the spread of bacteria from meat to vegetables is called?

The chromosome number of a human female is 44 + XX; of a male, 44 + XY. TrueFalse

When light can pass through an object, it is called

What is the greenhouse effect? The warming of a planet due to trapped radiation. The heating of a solid, such as a rock. The cooling of Earth due to air pollution.

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.