A cross section of a seed is shown.

Which is represented by the letter X?

embryo

seed coat

stored food

leat

S

IL

Which substance may lower air temperatures after a volcanic eruption? A. lava B. sulfur dioxide C. carbon dioxide D. water vapor

If a solution surrounding a cell is hypotonic relative to the inside of the cell, how will water move?

What is a structure built parallel to the shore that shields the coast from breaking waves? groin tombolo wave barrier seawall

Does cellular respiration affect boys and girls differently? Why or why not?

Which is not a characteristic of imprinting?

In humans, what is the results when a valve is leaking blood backward in the heart

The spindle forms during this phase

Which of the following is considered a bronchodilator? a. Acetylcysteine b. Guaifenesin c. Theophylline d. Epinephrine HCL

Sean has a bag with 15 marbles, six of the marbles are red, and 9 are blue. If Sean draws one marble from the bag, the probability of drawing a red marble is ... %

Complex DNA repair mechanisms in many organisms is a challenge to Darwinian evolution because DNA repair is complex involving many proteins and Darwinian evolution would need to evolve all of these proteins simultaneously. True False