How did scientists obtain environmental DNA (DNA) from carp in the waterways near Chicago?

A. They collected water samples and isolated DNA the fish had left
behind.
B. They extracted DNA directly from the wastes of the fish.
C. They collected carp eggs, from which they extracted DNA.
D. They captured carp and extracted DNA directly from the fish.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.  

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.