Which of the following best describes the process of natural selection? a. In a given environment, specific versions of heritable traits help individuals survive better and reproduce more than other versions of those traits.
Ob. Species are related by common ancestry.
Oc. Characteristics can be directly transferred between species.
Od. Only related species show similar characteristics.

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u. s. and mexico. the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake