All of the following predicts why is it difficult to find a solution to decrease pollution except? 1-There are limited numbers of laws regarding pollution
2- Humans refuse to stop polluting.
3- There are many cause of pollution
4- Scientists are still researching methods to best reduce pollution

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a. achondroplasia b. huntington's disease c. hemophilia d. albinism

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher