Which of the following is not considered a lymphoid organ or tissue?
A) Thymus
B) Bone marrow
C) Heart
D) Spleen
E) Lymph node
C) Heart
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How is tropical deforestation linked to climate change?
A. Burning the forests releases carbon dioxide, and transpiration by trees is diminished. B. Burning the forests releases carbon dioxide, and transpiration by trees is increased. C. Burning the forests consumes oxygen, and transpiration by trees is diminished. D. Burning the forests consumes oxygen, and transpiration by trees is increased. E. None of the answer choices is correct.
Where are sugars formed in the chloroplasts?
a. on the outer membrane b. on the inner membrane c. in the thylakoid compartment d. in the stroma e. within the thylakoid membrane
In 1953 the structure of DNA was determined to be a ________
Fill in the blank with correct word.
The insects in the diagram above represent all of the following except
A. herbivores.
B. the second trophic level.
C. primary consumers.
D. producers.