The cigar-shaped structure in the middle of this photo is:
4
You might also like to view...
The fossil Lucy (Australopithecus afarensis) is significant because, at _____ years old, hers is the first species to _____
A. 20 million; have been fully bipedal B. 1.3 million; have hominin brow ridges C. 3.2 million years; be fully bipedal D. 1.3 million; migrate out of Africa E. 600,000; have homin brow ridges
Fecal coliforms are useful indicator organisms for the contamination of water by ________.
A. sewage B. agricultural fertilizer runoff C. phosphates D. All of these choices are correct.
A __________ is a confined fluid upon which muscle contractions act. What will be an ideal response?
What major benefits do plants and mycorrhizal fungi receive from their symbiotic relationship?
A) Plants receive enzymes, and fungi receive nitrogen and phosphorus. B) Plants receive increased root surface area, and fungi receive digestive enzymes. C) Fungi receive photosynthetic products in exchange for living in plant root nodules. D) Plants receive nitrogen and phosphorus, and fungi receive photosynthetic products.