Which statements describe the movement of blood through the heart? check all that apply.

blood from the veins enters the ventricles.

atria and ventricles contract at the same time.

atria push blood into the ventricles.

valves allow for two-way blood flow.

ventricles push blood out of the heart.

Are salt and soap nutrients or toxins for yeast? explain.

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

Donde se encuentra el adn nuclear en un organismo eucariota?