I believe it would be the chromosomes of X and Y. XX is Female and XY is Male.
The correct answer is C. Trophic level
Explanation:
In biology, a food chain refers to a network that describes the relationship between the organisms in terms of food or the way organisms eat other and can be eaten. Because of this food chain are organized according to different levels that include producer organisms such as plants, herbivore animals such as rabbits, predators that eat other animals such as eagles and decomposers such as certain worms or bacteria. Each of these levels is known as a trophic level and describe the position of each type of organism in the food chain. Additionally, food chain guarantees balance in the ecosystems as it controls the population of species. Thus, the position in the food chain refers to a trophic level.
Answer:
The correct answer is "uranium-238".
Explanation:
Uranium-238, is the most abundant isotope of the element uranium. Uranium-238 has not enough nuclear force to balance electrostatic forces between protons, and as a result, it is a radioactive isotope and its losing energy because of the spontaneous breakdown of its atomic nucleus. Uranium-238 has a half-life of 4.5 billion years and is used as fuel in nuclear reactors as well as for dating purposes.
I’d say it’s the first one and it’s not even the first one probably than the last one
