Answer:
a could be it but also b be i would pick a cause when u run your breathing dose not really change if u stop it kinda stays the same if uk what i mean so i would go with a
Explanation: yw
Answer:
88% of rocks are almost completely devoid of fossils
Explanation:
Precambrian era which means "Before the Cambrian period". Geologists have found that there are some hard to discern fossils in some Precambrian rocks. Precambrian covers almost 90% of the entire history of the Earth whereby 88% of rocks are almost completely devoid of fossils which has been divided into three eras: The Hadean, The Archean and The Proterozoic
Answer:
Explanation:
A D and C
Your welcome brainly will be greatly appericated.
Answer: Concurrent schedule of reinforcement
Explanation: In psychology, such a schedule means representing two or more concurrent schedules that are independent. In doing so, each of them results in reinforcement, and each of the schedules is available simultaneously. This means that each of the independent schedules is equally effective and requires independent responses, where one does not have to respond to each of them.
