Which is an example of an internal stimulus?

A.

a sudden change of air temperature

B.

an artificial light that attracts insects

C.

an increase in the amount of water available to a plant

D.

a decrease in oxygen levels in the blood during exercise

What were the conditions like on early Earth? (Be specific)

Which of the following is a positive aspect of genetically engineered crops for the environment?

How do tides affect the organisms living in intertidal zones? A. The mechanical forces of the waves can dislodge the organisms from their habitat. B. Only plants live in intertidal zones because the animals float away with the waves and never return.

A change in an organisms genetic code is called what

The ripened ovaries of a flower contain the.

How do the endoplasmic reticulum and Golgi bodies work together

What sturcture protects the genetic material from the rest of the eukaryotic cell?

1. This subatomic particle with the smallest mass ... A. proton B. neutron C. electron 2. The fastest moving particle ... A. proton B. neutron C. electron

On the average, the Neanderthals were physically: a. taller and thinner than modern humans b. much more lightly built than modern humans c. shorter and more muscular than modern humans d. probably weaker than modern humans e.

Sunflower plants have smooth and fleshy stems. Based on these characteristics, which type of plant could it be? A.) Herbaceous B.) Woody C.) Monocot