On the periodic table, elements are grouped in columns with other elements that share ___.

A) The same atomic mass

B) The same atomic number

C) Similar chemical properties

D) The same number of neutrons

What is the first species in secondary succession

Why might a scientist say that an animal is becoming rare because of habitat destruction?

What does it mean if the Change in Mass is a positive number?

What is a protein made of

What name is given to a set of organs that work together to perform a specific function?

Arid and semiarid lands are prone to desertification because of

Which statement describes a situation that would reduce the stability of a forest ecosystem? (1) A fierce predator is removed from the ecosystem. (2) The number of producers remains constant in the ecosystem.

A scientist is studying a region of an ocean floor she discovers a long deep canyon that runs parallel to the coastline of a nearby continent what can she inferred from her discovery

Anson is 75 years old and has recently been experiencing a change in his personality. He is acting more impulsively and does not seem to care about his loved ones, to whom he has always been very devoted.

What is the best explanation if the gel of your PCR product shows smeared bands of multiple sizes? Select one: a. Non-specific gene amplification b. Primers hybridizing with one another c. Your isolate was not from a single bacterial colony d.