What are intraspecific and interspecific ecological competitions

First of all - ecological interactions in the ecosystem indicates how species interact with each other and species interactions in the system include:
- competition,
- predation,
- camouflage
- mimicry

In ecological competitions:
- intraspecific competitions are an interaction where individual members of the same species compete for the same resources
- interspecific competitions are about which individual members of a different species compete for the same resources.

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Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.