The earth is a closed system, which means that___ -only energy comes in from the outside
-nothing comes in from the outside
-the magnetic field of the earth pushes out harmful solar radiation
-only energy and matter flows in and out

b. heterotroph

explanation:

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

hope this any more questions i am here plz mark brainliest

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

i believe it is c: genes for body color and wing size are inherited separately from each parent.