Why was earth and other planets not solid when they formed during the precambrian approx 4600 million years ago?

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species