Biology: For the following fill in the blank questions choose from the following words. Each word may only be used once or not at all: photosynthesis, cellular respiration, abiotic, biotic, primary succession, secondary succession, climax communities, pioneer species, biodiversity, and sustainable. 4. The process by which autotrophs use energy from sunlight to build carbohydrates is called .

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?