Answer:
controlled variable
Explanation: i know this bc i just got it wrong lol
Yes most of them do. That is one of the main reasons why dogs get spayed/neutered. In order to give birth, You need to of had your period first. So the animals that can give birth have a period. I don't know how long it is though. I am also not sure about fish, just mammals.
The correct option is B.
The alimentary canal is the pathway through which ingested foods move from the mouth all through into the anus. At each portion of the canal, different types of chemical reactions take place, which digest the eaten food and prepare the useful part for absorption and the waste part for excretion. In the alimentary canal, the stomach open into the small intestines. The small intestines is the site where the useful part of the nutrients will be absorbed into the system through villi.
Answer;
- Elasticity
- hardness
- toughness
Explanation;
-Mechanical properties are defined as physical properties that a material exhibits upon the application of forces.
-These mechanical properties include elasticity and plasticity, ductility, tensile strength, fracture and toughness, compression strength, shear strength, and indentation hardness.
