True or False: If one thing in a food web is affected, it will only probably affect the organism that directly relies on it for energy.

A. True

B. False

Name one trait in which humans differ and list at least two variations of this trait.

Testosterone directly affects the (1) formation of a zygote (2) changes within an ovary (3) production of sperm cells (4) development of a placenta

Which of the following describes the nervous system integrative function? A) senses changes in the environment B) analyzes sensory information, stores information, makes decisions C) responds to stimuli by gland secretion or muscle contraction

Why does an increase in total resources or number of added resources commonly lead to declines in species diversity? a. The diversity in most communities is negatively correlated with resources. b.

Law of independent assortment states that A. Genes associated with different characteristics assort independently of one another during gamete formation. B. Genes associated with height and skin color are inherited together. C.

Broccoli, cauliflower, kale, Brussels sprouts, and cabbage are all just different breeds of a single type of weed commonly found along the shores of the English Channel. The differences between them were all gradually selected for by various farmers.

Which type of transport requires energy to move a molecule?

What was the neolithic revolution and how did it change life

In two or more complete sentences, compare relative dating and absolute dating of earths materials.

Above 38oC and below 0oC the rate of photosynthesis decreases. Propose a hypothesis to explain why this occurs.