Male and female reproductive systems that starts with letter D. Please I need help! no rude/non-sense answer please or I report you.​

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which of the following graphs have the same wavelengths

The relationship between intron and exon