Two scientists testing different hypotheses about the same question
Answer:
The Circulatory System
Explanation:
When blood is rich in carbon dioxide it leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. (All of which have to do with the circulatory system)
Protein building begins with the DNA strand in the Ribosome. The DNA strand is essential to dictating the type of protein that is to be produced, based on the sequence of nucleic acids.
<span>How has the Douglas-fir adapted to enable its survival in the taiga biome?
a.
low growing
b.
perennial
c.
waxy needles<=====
d.
survive on limited nutrients</span>
