Describe at least 2 ways in which nature can impact an ecosystem over a long period of time.

Scientists have found that all living things, from bacteria to humans, rely on genetic codes to direct the functions of their cells. these genetic codes are contained in strings of nucleotides and have very similar structures.

A child contains what proportion of their parent's genetic makeup?

Choose the most accurate description of China today. A) China remains Communist but is also a major economic power. B) China is no longer Communist but is a major economic power. C) China remains Communist but is not a major economic power.

Which of these is a function of the xylem?

How might a weathered mountain appear different from an un-weathered mountain? A. The weathered mountain would be taller B. The weaathered mountain would appear rounder in shape C. The weathered mountain would appear more jagged D.

A male tree frog migrates to a new habitat with little ground vegetation and many tall trees. Jumping is the safest way for the frog to move from tree to tree.

Select the correct answer. Neurofibromatosis, a genetic disease caused by mutation on the NF1 gene, follows an autosomal dominant pattern of inheritance.

Which of the following is NOT a way a cell can increase its surface area A. decrease its volume B. add organelles C. let water out of the cell D. all of the above

Using a pH meter, you find that egg whites have a pH of nearly 8 and egg yolks have a pH near 6, if litmus paper turns blue in bases and red in acids, which part of eggs would turn litmus paper blue? A. both B. egg whites C. egg yolks D. neither

With all his gear neil armstrong weigh 360 pounds on earth when he landed on the moon he weighs 60 pounds why