X-rays cannot

x-rays cannot pass through earth's atmosphere. which of these is the best location to place a telescope used to observe x-rays from stars?

a-mountain
b-top of building
c-space
d-high-flying aircraft

What is the role of fadh2 in cellular respiration

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

What is the purpose of transcription? a. to copy the nucleotide in dna b. to form rna molecules from dna c. to produce a nucleic acid sequence from an amino acid sequence d. to link amino acids together to form stands of protein