A time bomb virus is a virus that is triggered on a certain date. It is a malicious program that is designed to release virus unto a system. Once the time has arrived, it will automatically start working what it is programmed to do since any virus could do anything depending on what it is designed to do.
Answer: A.The introduced species compete for resources more effectively than native species.
Explanation:
An introduced species is also called the exotic species and this is an organism which is not a native organism or specie and therefore isn't native to the place but rather it's being transported to the place through the activities of human being.
When the introduced species are introduced to a particular area, they compete with the natives for the available resources and often do this more effectively than the other native species.
Therefore, the correct option is A.
