Let the random variable x be the outcome of rolling a 6-sided die. assuming the die is fair, the probability distribution is as follows:
x 1 2 3 4 5 6
probability 1/6 1/6 1/6 1/6 1/6 1/6
using the above table to answer the question: what is the probability that x is less than or equal to 2?
a.1/6
b.1/5
c.1/3
d.1/2
e.2/3

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.