The answer that best completes the statement above is THE ORIGIN OF THE UNIVERSE. Cosmic Background Radiation or also known as the cosmic<span> microwave </span>background radiation is known to be the radiation that exist from the<span> the universe's early stage in the Big Bang </span><span>cosmology. Hope this answers your question.</span>
Answer:
Behavior adaptation
Explanation:
Behavior adaptation is where a animal behaves in a different manner that suits its environment or keeps the animal safe
Answer:

chloroplast
chloroplastIn all phototrophic eukaryotes, photosynthesis takes place inside a chloroplast, an organelle that arose in eukaryotes by endosymbiosis of a photosynthetic bacterium (see Unique Characteristics of Eukaryotic Cells). These chloroplasts are enclosed by a double membrane with inner and outer layers.
Antibodies- I hope that helps :)