A simplified food web is shown. suppose the birf population declines due to shortage of nesting sites. which organism would be lost negatively affected by a decline in the bird population A. Spider
B. Grass
C. Toad
D. Snake

i think the answer is g1

hope i

-lavira: )

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.