BRAINLIEST ! 10P PLEASE HELP WILLL MAKR BRAINLIEST
I WILL MARK BRAINLIEST MORE THAN ONCE

What group of cells sends signals to control the heart rate?

What is the tissue that separates the left and right sides of the heart?

Describe how the circulatory and respiratory systems work together to help maintain homeostasis?

How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.

Describe how blood helps to maintain homeostasis when working with the immune system?

Explain how breathing is affected in high altitudes.

When should a person take antibiotic?

What do “B” cells do? What do “T” cells do?

Describe the following hereditary conditions:

Cystic Fibrosis –

Huntington’s disease -

Sickle Cell Anemia –

Questions on Scientific Investigating:

Why is it important to maintain records of the procedures of an experiment?

What is a hypothesis?

What is the difference between and experiment and a scientific investigation?

Two students are comparing scientific experiments to investigations. They came up with the following ideas.

Student A: Testing plant growth in different types of soils
Student B: Comparing the water level in a lake during different times of the year

Which student gave an example of a scientific experiment?