A) single loop
Fish have a two-chambered heart in which a single-loop circulatory pattern takes blood from the heart to the gills and then to the body.
Answer:
when the first homeosapien stood on two legs and walked the earth
Explanation:
history of evolution has always stated that the event was when "we" stood on the earth
Answer:
25
Explanation:
It depends if number is more than 5 or 5 it will change and if it is less than 5 then it will be same
Plants use their stomata to take in Carbon dioxide and take out oxygen during photosynthesis. It's how they "breathe" if that makes it more understandable.
I believe (B) is the best option due that it mentions the reason causing natural selection with limited supplies competition increases making it more likely for the strongest individuals to survive
