Step 1. Simplify brackets

Step 2. Simplify
13
Done! :)
Your answer is A. 13 Hope this helps!
Why temperature affects heart rate in ectothermic organisms? If the temperature is within the optimal range for enzyme activity more ATP will be produced and the heart will beat faster due to increased metabolic activity and energy availability.
Called joints
are fibrous joint
sutures are found between most of the bones of the skull
Answer:
mrs weasley's genotype is AA while Mr Weasley's genotype is AB
Explanation:
since the mating of Mr and Mrs Weasley results into = AA, AB, AA and AB
Mrs Weasley has homozygous type A blood while her husband Mr Weasley has heterozygous type A blood as well