What do scientists in the field of systematics accomplish?
discover new fossil sites
organize and classify organisms
name new species
communicate among field biologists

organize and classify organisms

Explanation:

Systematics is the area of biology that is concerned with organizing, understanding and classifying living things. It mainly studies the diversity relationship, for example, species C is more related to species D than it is to B, defined as sister groups.  

Systematic aims to show the diversity within the genre, also to describe the biodiversity, which is part of the taxonomy, to order the species and biodiversity, underlying this systematics. This science is concerned with building classes, classifying, on which we can make generalizations. For this reason, we can conclude that scientists in the field of systematics work to organize and classify organisms.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

the correct answer in apex is tissue development, i know because i just had this question