What discovery was made by alvin?
a. over 4000 new species of marine life
b. hydrothermal vents
c. the aqualung
d. the temperature of different parts of the ocean

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a).it must be applicable to future events and occurrences. b)it must be based on scientific observations that can be repeated in a controlled setting. c)it must be open to modification if new evidence doesn't completely support it. d)it must be consistent with only a small portion of relevant observations or data.