Answer:
I'm not too sure specifically for 9th grade. Though I am in 12th grade right now and currently using the Edrolo biology textbook which is solely based on the key dot points/skills for the entire subject. They also include past exam questions or similar exam style questions both multiple choice and short answer for each topic and chapter within the book.
Explanation:
Answer:
People drink water that has been contaminated by animal feces
Explanation:
Answer:
Chromosomes are made up of DNA(deoxyribosenucleicacid) which is a protein complex called chromatin that is organized into subunits called nucleosomes. The way in which eukaryotes compact and arrange their chromatin also helps regulate gene expression.
Explanation:
Answer:
1. genetic diversity
2. species diversity
3.ecosystem diversity
Explanation:
biodiversity is the veriety of life whether as a planet of in a specific ecosystem
A population would be an organism (the same species) living in an area
