Which of the following provides the best explanation of why birds have hollow bones? Hollow bones provide more structure for walking stability.
Hollow bones provide more structure for walking stability.

Hollow bones provide extra storage for food needed by birds in winter.
Hollow bones provide extra storage for food needed by birds in winter.

Hollow bones provide balance so birds can float when swimming in water.
Hollow bones provide balance so birds can float when swimming in water.

Hollow bones provide strength with less mass.
Hollow bones provide strength with less mass.
Skip to navigation

What must be true for natural selection to heppen

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas