Key is to lock as D. Substrate is to active site.
Answer:
The fossil theory and the distribution of species
Explanation:
Answer:
Fertilization
Explanation:
When an egg/sperm is created it only has half the needed dna needing the opposite to create a person. That's why sex required two people.
Biotic factors include plants, animals, fungi, algae, and bacteria so the only answer would be invasive species