Select the correct answer from each drop-down menu. Complete the sentences about Earth’s early biosphere.
After Earth formed, the emerging biosphere had several effects on Earth’s lithosphere. For example, rocks and minerals showed evidence of 1A(enter text here)
caused by the presence of oxygen in air. In a second example, 2B(enter text here)
actually created new rock after being dissolved in water or buried underground.

1A.
1.combustion
2.oxidation
3.fossilization
4.respiration

2B.
1.minerals
2.organisms
3.carbon dioxide
4.sunlight

What do animals wth echolocation have in common other than echolocation

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.