A. Tree leaves
Explain: because giraffes are herbivores their diet mainly consists of leaves and plants.
The answer is A, because the phytoplankton is the foundation of this food web. Without your foundation, "the building will begin to crumble".
DNA. Deoxyribonucleic acid (DNA<span>) is a nucleic acid that contains the genetic instructions for the development and function of </span>living things<span>. All known cellular life and some viruses contain </span>DNA<span>. The main role of </span>DNA<span> in the cell is the long-term storage of information.</span>
<span>The energy from the sun is absorbed by the chlorophyll of plants leafs and then is converted in glucose by a process called photosynthesis. After we eat and digest plants, glucose in our blood is transported through all muscles.</span>