Which of the following statements are part of
Koch's Postulates? Check all that apply.
The disease-causing microorganism must be
present in at least half of the cases of
disease.
The microorganism can be isolated and
grown in a pure culture.
The microorganism from the pure culture will
cause the disease in at least 80% of healthy
organisms.
A re-isolated microorganism may evolve into
a different species than the original.

Ineed to know why d is the correct answer asap

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back