1 Point The diagram below shows a sarcomere. If a disorder limits the number of
calcium ions that can bind to actin, which symptom would a person suffering
from this disorder most likely display?
Myosin
Actin
O A. Weakness from an inability to contract muscles
O B. Fatigue from constant muscle contraction
O C. Anxiety caused by an increased heart rate
O D. Shortness of breath caused by inefficient gas exchange

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

This is so important ugh its 25 points