Số trứng và thể cực tạo thành khi một tế bào mầm giảm phân

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these