<span>9. If you move a substance from one container to another and its volume changes, the substance is a gas. This is because, gases do not have fixed volume and shape; their shape and volume depend on the container used. 10. For most part, you can ignore the forces of attraction among the particles of gases. This is because, the forces of attraction among them is negligible. 11. Factors that affect the pressure of an enclosed gas include: temprature, volume and number of particles. Thus, the correct option is D. All these factors works together to determine the pressure of an enclosed gas. </span>
Answer:
See explanation below.
Explanation:
Starfish, also known as sea stars, are marine organisms that belong to the Class Asteroidea. They are considered invertebrates because they lack a vertebral column. Moreover, most starfish species have five arms but some species can have up to 15!
Here are some characteristics that differentiate starfish from other organisms and make them so unique:
- Possession of tube feet.
- Most species have pedicellaria, claw-shaped structures with movable jaws.
- Radial symmetry
- They can possess from 5 to 15 arms.
- Do not possess brain.
- They can regenerate parts of their body.
Answer:
The given blank can be filled with cohort effect.
Explanation:
A cohort effect refers to the specific influence of a group bonded by common life experiences or time. Cohorts in an organization are generally illustrated by entry date and retain some common features like cohesiveness, size, and competition, which can influence the organization.
A cohort refers to a group of individuals who shares common experiences or features like the region where they were born, their years of birth, and others. Cohort effects are a concern for the scientists working in the fields like epidemiology, sociology, and psychology.