Answer: The answer is (D) usually made of tough fibers
Explanation:
Answer:
1. Kingdom Animalia
2. Yes
3. No
4. The taxonomic ranks get more specific as you go down the upside-down pyramid. As you go down the levels, the animals left are more similar but there is only one animal in the species category; the polar bear.
(Needs Two More Sentences)
Answer;
The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.
Explanation;
-The function of the respiratory system is to add oxygen to the blood and remove carbon dioxide.
-The circulatory system carries blood throughout the body via an intricate network of arteries and veins.
-The respiratory and circulatory systems bring oxygen and nutrients to the cells. Both systems work together to maintain homeostasis.
Cell so to tissue as tissue so to organ as organ is to organ system. Hope this helps helps!
