Under which of the following conditions would photosynthesis be favored over photorespiration? A) a high concentration of O₂ within the spongy mesophyll of a plant’s leaves B) a sunny and windy day in an arid environment C) a high concentration of CO₂ within the spongy mesophyll of a plant’s leaves D) the majority of stomata on a plant’s leaves are closed

Melissa lives in a town called greendale. she discovers that when she lights a match and holds it near her kitchen faucet, the little flame grows into a larger fire. melissa is surprised because she thought the water would extinguish the flame rather than ignite it further. her mother tells her that the water might be contaminated with dissolved methane, a primary component in natural gas. melissa investigates the matter and finds that cases of methane contamination started shortly after a company began fracking for natural gas in the area. based on this information, which three statements are plausible consequences of fracking in greendale?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2