<u>Answer:</u>
The human beings serve as replica/model of the mammals.
<u>Explanation:</u>
- A mammal is a vertebrate and it has fur, mammary glands (female) and feeds the young ones with milk, a neocortex (region of the brain) and three middle ear bones. This differentiates them from reptiles and birds.
- All mammals are 'warm blooded' because the body temperature heats the blood.
- A few mammals like the platypus lay eggs. The mammals are at the top of the food chain.
Answer:
fills with blood during arousal and causes an erection.
Explanation:
The corpus spongiosum is a mass of tissue present in the under part of the penis (male sexual structure) that is actively responsible for erection of the penis. The corpus spongiosum, in conjunction with the corpus carvernosa works to maintain erection of the penis in males.
During sexual arousal, the corpus spongiosum, which surrounds the urethra (passage for urine and semen) helps keep the urethra open for semen to be released while the carvernosa becomes filled with blood. This constant flow of blood into the carvernosa makes the penis enlarge and assume an erect position.
2:1 would be the ratio of boys to girls
The Mitochondria breaks down sugar to supply and power the cell
Remember that the mitochondria is the powerhouse of the cell, without it, the cell wouldn't be able to function
Answer:
D
Explanation:
Example the action of teeth on food in the mouth increase surface area for salivary amylase to start digestion of starch
