2. Processes that amplify a response to an external stimulus are known as- A. positive feedback loops.
B. negative feedback loops.
C. external stimuli.
D. internal stimuli.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.