Explain the difference between habitat and niche

Each organism plays a particular role in its ecosystem. A niche is the role a species plays in the ecosystem. In other words, a niche is how an organism “makes a living.” A niche will include the organism's role in the flow of energy through the ecosystem

Difference Between Habitat and Niche. Habitat is a set of the place of environmental conditions in which particular organism lives and adapt the situation accordingly. ... Ecology is the study of all the living beings and their interactions with the environment, whether a plant or an animal or other organism

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects