Protections the ozone layer
Maintaining animal and human food chain
Preserving potable water and making efficient use of non renewable resources
The answer would most likely be B
Hope this helps :)
Nitrogen
idk i got it from google and i learned it in 7th grade
Answer:
It tell us that aquatic environment changed into land environment.
Explanation:
These fossils tell us about the evolution of the geosphere from aquatic environment to land environment at the Grand Canyon because the presence of sea organisms which is only found in the sea. Millions of years ago there was a sea at the Grand Canyon that have sea organisms crinoids, brachiopods, and sponges etc but with the passage of time all water removed from this area and this aquatic environment change into the land environment.
Answer:
This statement refers to Test Cross.
Explanation:
Generally a Test cross involving an individual with a homozygous recessive trait . When a single trait is being studies, a test cross is a cross between an individual with the dominant phenotype but of unknown genotype (either homozygous or heterozygous) with a homozygous recessive individual. If the unknown is heterozygous for a trait, then approximately half of the offspring will display the recessive phenotype. If all the offspring carry dominant phenotype, Then the unknown genotype is homozygous.