C. both biotic and abiotic factors in earth most ecosystems have both abiotic and biotic systems. They actually need both in order to survive.
Answer:
Should be D since what the helicase does is unwind the dna and seperate it into the 2 strands
Explanation:
Answer:
True
Explanation:
Tobacco is consumed during smoking which contains an addictive substance called Nicotine. Nicotine exerts its effect on the body by stimulating the acetylcholine receptors in the neurons. The stimulation of these receptors stimulates another neurotransmitter like glutamate, dopamine and GABA which produce addictive effects in humans.
Since the acetylcholine is involved in stimulating the other neurotransmitters therefore true is the correct answer.
Thus, true is the correct answer.
Answer:
<h2 /><h2>
Both amphibians and reptiles...</h2>
A. have lungs
B. have gills
C. breath only through their skin
D. have amniotic egg
<h3>
For me, my answer is letter B. have gills....Hope it helps</h3>
Explanation:
<h2>
Please don't delete my answer :(</h2>
<h2>
#Princesses Rule</h2>
