Many scientific explanations for the origin of DNA and life have been proposed over the years. These hypotheses explain how inorganic molecules became organic monomers, such as amino acids, sugars, phosphates, and bases.
But this still didn't explain where living things came from. If macromolecules were able to form on early Earth, this still
leaves us with the question of how the polymers would have become self-replicating, a basic criteria for life. There
are several ideas but little certainty. Some of the common ideas include: the RNA world hypothesis, the "genes first"
hypothesis, and the "metabolism first hypothesis.

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.