the correct answer is landscape ecology
1- 4 Na + O2 —> 2 Na2O
2 - 4H2 +2O2 —-> 4H2O
3- Na2SO4 + CaCl2 —> CaSO4 + 2NaCl
4- 2Al2O3–> 4Al+ 3O2
5- N2 +3 H2–> 2 NH3
6- 3Fe +4 H20–> Fe3O4 + 4H2
I’m having trouble reading the last ones .
I think it is D. because the sun's radiant energy gives life to the earth life forms.
A.
Dad is definitely XrY(colorblind),
mom can be either XRXr(heterozygous,carrier, not colorblind) or XrXr(colorblind)
B. 50%(for XRXr*XrY)
C. So the cross’ll be XrXr*XRY. All the boys will be colorblind(XrY). The girls will be carriers of the recessive allele(XRXr).
Hope this helps:)