Over several years, a population of bats that inhabits a cave decreases. Which of the following factors could cause this decrease in bat population size to occur? Choose all the factors that apply. A. decrease in predators
B. competition for shelter
C. increase in food supply
D. infection by a fatal disease

How do you transfer mrna into codons ? i'm so confused : (

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars