What process takes place at the boundary between the capillaries and the alveoli?
Bronchiole
Alveol
Small blood
vessels (capillaries)
O A. An exchange of oxygen and carbon dioxide between the
circulatory and respiratory systems
O B. An exchange of blood and lymph between the circulatory and
lymphatic systems
C. Reabsorption of water into the circulatory system from the
excretory system
O D. An exchange of air between the circulatory and respiratory
systems

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg