Which of the following joints are primarily synovial?

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome