Is being in a "habitable zone" enough to say the planet is habitable for human life? what characteristics would an earth-like planet need to have to support life? what challenges would we face traveling to and colonizing kepler-186f, or other earth-like planets outside of our solar system? do you think scientists should spend time looking for earth-like planets before we have the technology to visit them? why or why not?

hello which   of the following there is nothing!

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…