Answer:
D
Explanation:
because trees take in carbon dioxide and produce oxygen.
Answer:
21 chromosomes
Explanation:
Meiosis is a type of cell division that produces 4 haploid daughter cells (i.e., gametes) from a single diploid cell. This parental cell undergo one (1) cycle of DNA replication and two (2) cell divisions, thereby, in the case of the Norway rats that have 42 chromosomes, the final number will be 21 (21 x 2= 42)
Answer:
E) Ca2+ from the sarcoplasmic reticulum binds to troponin
Explanation:
B, burrowing action of earthworm
<span>the portion of an antigen that binds covalently to an antibody</span>
