A group of specialized cells working together to perform a function is a(n) . A. Organ system B. Organ C. Cell D. Tissue

In which direction is the pacific plate moving in relation to the north american plate?

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Donde se encuentra el adn nuclear en un organismo eucariota?