Answer:
circular
Explanation:
Plasmids are small, circular extrachromosomal DNA molecules that replicate independently of the chromosomal DNA. They usually carry at least one type of gene that is beneficial to the host organism. They code for resistance genes in bacteria.
They need water for their eggs to thrive. Baby frogs are born with gills and ate basiclly like fish for the first weeks of their lives.
Answer:
The correct answer is D. Umbilical cord
Explanation:
The umbilical cord connects the fetus to the placenta and through it exchanges nutritional substances as well as oxygen-rich blood. The umbilical cord is maintained throughout gestation until the moment of birth, when it is cut and leaves a permanent scar, the navel. The umbilical cord is responsible for breathing and feeding the fetus until the moment it is born, so any failure or blockage in the circulation of oxygen and nutrients through the cord can lead to injury or even death of the embryo. It also serves to remove waste and carbon dioxide (CO2).
Answer:
Option A thermocile
hope that is the correct answer
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