Answer:
B. evolutionary relationships.
Explanation:
Systematics is biological study of the relationships among living things through time. It is used to understand the evolutionary history of life. Usually, relationships among organisms are presented and vizualized through the evolutionary trees. Branching of the tree shows group relationships while branch length shows amount of evolution.
It is called desert animal survival thats the adaption
Answer:
For block b to have a greater mass, it would have to have a greater gravitational force. Therefore, block B must have a greater gravitational force.
Explanation:
The answer is: <span>D. The population of bluebirds will decrease, leading to an eventual decrease in the number of predators.
The unwanted </span><span>dumping of chemicals causes a decrease in the number of insects. The insects are eaten by bluebirds, but if there is not enough food for the bluebirds, they will die- decrease of birds. If there are less bluebirds, their predators will have less food, so many of them will also die.</span>
