Answer:
Cardiovascular is the correct option
Ecosystem is a community or group of living organisms that live in and interact with each other in a specific environment.
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
Answer:
A sudden shortage of goods is called a shortage and happens for a variety of reasons in economics.
Answer:
They have the same DNA because they are all part of the same organism, but they look and act different because they have different jobs and uses.
Explanation: