Ecologists discovered that were dying trout in a stream that ran through some farmland where nitrogen fertilizer was used on the crops. how might you explained what happened?

The number above the element's symbol is the element's atomic number. Match each element with the number of valence electrons it has.

Which is the smallest entity? Galaxy, moon, solar system, or universe?

Unlike the abdominal viscera the thoracic viscera is separated into two compartments by an area called the mediastinum. What is the clinical importance of this compartmental arrangement?

Match the features of the organisms belonging to different kingdoms to their corresponding characteristics.

What part of the sperm contains digestive enzymes that break down the outer membrane of the egg? a. nucleus b. centride c. acrosome d. mitochondrion

Why can alternative splicing of messenger RNAs (mRNAs) be advantageous for eukaryotic organisms? A-allows exons from two different genes to be spliced into a new mRNAB-increases the variety of proteins that can be producedC-decreases the average

Karen has type 1 diabetes, and she often forgets to administer insulin to herself. why does her breath usually have a fruity odor?

3. In the Phylum Porifera, the highest level of organization is arguably only at the cellular' levél. How have the cnidarians become more complex in terms of organization? What does this mean?

Explain the biological process that enables the roots epidermal cells to do this

Which term describes when individuals leave more offspring than other individuals?