23. Only small amounts of enzymes are required for
reactions within cells because enzymes are
(1) fragile
(2) reused
(3) small molecules
(4) constantly synthesized

Which of the following important physical features is not located on new zealand’s north island? a. the eastern hills b. the geothermal plateau c. the geysers d. the central lowlands

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

The declining axolotl population in mexico city is an example of in overcrowded cities. a. the surpassing of support capacity b. changes to natural environments and native species c. the lack of safe homes and tenured spaces d. the effects of a growing urban heat island