Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms. Nearly all autotrophs use a process called photosynthesis to create “food” (a nutrient called glucose) from sunlight, carbon dioxide, and water.
Answer:
change over time and descent from a common ancestor
The opposite of free fall is soar
Answer:
the composition of atmosphere is determining the temperature of the region