Enzymes? a. are able to heat up molecules so that they can react. b. always provide carbon dioxide for chemical reactions. c. hold substrate molecules in the correct alignment. d. absorb excess heat so that the reactions occur at low temperatures.

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from