Submit your document or use the following to calculate the number of beats per day: • Number of beats in 15 seconds =
• Now multiply this number by 4 to tell how many times your heart beats in one minute.
Example: Number of beats in 15 seconds X 4= __ beats per minute
• Now multiply this times 60 to tell how many times your heart beats in one hour.
• Example: Number of beats in 1 minute = X 60 = __ beats per hour
• Now multiply this times 24 to tell how many times your heart beats in one day.
Example: Number of beats in 1 hour = _X 24 = __ beats per day.

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.