Match the scenario with the type of weathering in action. mechanical weathering chemical weathering biological weathering The root of a huge tree causes cracks in a rocky surface. arrowRight Part of a cliff breaks and falls due to waves. arrowRight Acid rain reacts with calcite present in limestone. arrowRight

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.

According to this food web which of the following would be considered primary consumers

All ova contain sex chromosomes corresponding to: x y xx xy