Different body cells can respond differently to the same peptide hormone because a. the hormone is chemically modified in different ways as it travels through the circulatory system b. different target cells have different sets of genes c. each cell converts that hormone to a different molecule d. a target cell's response is determined by the components of its signal transduction pathways

Asap timed! 1. ice core samples from glaciers ice caps contain bubbles of ancient atmosphere that are in layers based on age. what questions are scientists most interested in? a. how the amount of water vapor needed to make the ice has changed b. how the amount of ozone has changed over time.c. how the amount of ice in each layer has changed over time d. how the amount of carbon dioxide has changed over time 2. what produces milankovich cycles ? a. sunspots ams solar flare on the suns surface b. changes in the earths orbit c. gravitational changes bases on the position of the sun and the moond. cycles of vegetation that result in desert and rainforest conditions

What are two reasons for why a species might disappear from the fossil record?

Which structure in the cardiovascular system connect arteries to veins?