D would be the answer to this question
Primary consumers<span> only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as </span>heat<span>. You can probably see where this is going. Primary consumers are eaten by </span>secondary consumers<span>. An example would be birds that eat bugs that eat leaves. </span>Secondary consumers<span> are eaten by </span>tertiary consumers<span>. Cats that eat birds that eat bugs that eat leaves, for instance.</span>
Cytosine(C) binds with Guanine(C)
Adenine(A) binds with Thymine(T)
a.From here we can deduct that there are the same number of nucleotides of guanine that as cytosine=>G=45 base pairs
b.2A=100-G-C
2A=100-90 2A=10 A=5 base pairs
If an area as a relatively large number of leaves, these leaves can block much-needed sunlight for other organisms, whether they remain on the tree of fall to the ground.
Answer:
Darwin's finches are a classic example of an adaptive radiation. Their common ancestor arrived on the Galapagos about two million years ago. During the time that has passed the Darwin's finches have evolved into 15 recognized species differing in body size, beak shape, song and feeding behavior.
