The first life on Earth, a simple, single-celled prokaryotic bacteria, appeared on life approximately how long ago? A) 4 thousand years B) 4 million years C) 4 billion years D) 4 trillion years

Body motions during speaking are properly referred to as:

Which of the following is NOT evidence supporting the endosymbiotic theory? a. mitochondria and chloroplasts are nearly identical to some free-living prokaryotes. b. mitochondria and chloroplasts divide by splitting. c.

1. What changes occur, in reference to the circulatory system, when you exercise?

Compare and contrast the locations of anaerobic and aerobic respiration in a typical eukaryotic cell. what are the by-products and number of atp molecules produced in each

Elements used to make for computers include germanium and: a. oxygen or b. silicon

Which of the following does NOT represent an adaptation that would lead an organism to be successful? A. A wolf in a cold environment growing a thicker coat of fur. B. A caged chicken developing a longer wingspan. C.

What are the 3 things plants must be able to do

Ranchers historically have used genetics to produce new varieties of cattle. buffalo can tolerate both hot and cold temperatures but have meat that is not as tasty and tender as beef.

What is the term for a structure that has no use in an organism

Which phrase describes radiation? transfer of heat by the actual movement of warmed matter transfer of heat between two objects that are touching the process in which energy is emitted by one object, transmitted through space, and absorbed by