What does macromolecule mean?

a. a complex sugar formed when three or more smaller sugar
molecules are joined together

b. a very large molecule made of many smaller molecules joined
together

c. an organic compound that contains only carbon, hydrogen, and
oxygen

d. a compound made from a long chain of molecules that carry
hereditary information

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

Explain how organisms could be harmed by high levels of salt from roadways?

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water