| 100% | BIOMASS | 7 | Renewable energy source which is developed from organic materials that come from plants and animals |
| 38% | WIND | 4 | Renewable energy source that is captured by turbines and converted into electricity |
| 38% | COAL | 4 | Non-renewable energy source that is found as brownish-black sedimentary rock and is made of dead plant matter |
| 35% | SOLAR | 5 | Renewable source of energy that is derived from the sun |
| 30% | TOXINS | 6 | Poisons that are derived from plants or animals |
| 29% | ASPHALT | 7 | Material that can be used to secure plant graftings and seal tree wounds |
| 28% | WOOD | 4 | Material that comes from trees |
| 28% | WOOL | 4 | Material that comes from sheep |
| 28% | NATURAL | 7 | ___ gas, non-renewable energy source which is a combination of different compounds, mainly methane |
| 28% | COMPOST | 7 | Eco-friendly DIY fertilizer that helps recycle food, plant, and organic materials |
| 28% | ASIA | 4 | Continent that is home to Japan and the land where 3-Down comes from |
| 28% | SOY | 3 | Plant-based milk sourced from beans that are used to make tempeh |
| 27% | TREE | 4 | Plant that provides shade... examples of which are found at the starts of 17a, 30a, and 41a |
| 27% | WOOD | 4 | Building material that comes from trees |
| 27% | STEVIA | 6 | Natural sweetener that comes from plant leaves |
| 27% | KINETIC | 7 | Energy that comes from motion |
| 27% | BIODIESEL | 9 | Type of vehicle fuel that comes from plants |
| 27% | WOOLLEN | 7 | Made of material that comes from a sheep |
| 27% | EGG | 3 | Breakfast ingredient that comes from hens and ducks |
| 26% | BRACES | 6 | Invisible ___, orthodontic devices that are transparent and use material originally developed by NASA |
| 26% | JENNIFER | 8 | Name that may have been derived from the juniper plant and common to 13a, 18a, 32a, and 39d |
| 26% | FUSION | 6 | Mr. ___, gadget from "Back to the Future" that is a source of sustainable energy |
| 26% | FOSSILFUEL | 10 | Non-renewable energy source that might be fueling 15-Across: 2 wds. |
| 26% | YMCA | 4 | Worldwide youth organization that promotes developing a healthy body, mind and spirit which is headquartered in Geneva, Switzerland: Abbr. |
| 26% | OMNIVORES | 9 | Animals that eat both plants and other animals |
| 26% | OMNIVORE | 8 | Animal that eats both plants and other animals |
| 26% | RENEWABLE | 9 | Energy sources that are not depleted by use |
| 26% | OMNIVORE | 8 | An animal that eats plants and animals |
| 25% | DEER | 4 | Animal that venison comes from |
| 25% | COW | 3 | Animal that beef comes from |