what is meant by the idea that matter and energy flow

What animal has spiny armor that protects it from predators and cushions its falls from trees?

Two muscle groups that oppose the action of each other include flexors and extensors, like the biceps and triceps. these muscle groups are known as:

Arrange the steps of the gram staining procedure in their correct order. Do not overlap any steps.

What parts are in the skeletal system

When driving your car, you hear a squeal everytime you press the breaks. You decide the problem is that there's a mouse trapped in the brakes this is an example of theory hypothesis law

Describe how females can be carriers, but males cannot in terms of sex linked traits

When objects of two different temperatures come into contact, energy is transferred between the two objects from the object of higher temperature to the object of lower temperature. True False

When a dog salivates after having food placed in its mouth the food is called the?

A train accelerates at a rate of 2.5 km/hr/sec. During the acceleration period, its velocity changes by 55 km/hr. Choose the exact time of the train's acceleration. A. 1,200 s B. 22 hr C. 22 s D. 0.045 s

Why did Mendel use cross-pollination in his experiments? A) to speed up self-pollination b) to control which plants pollinated other plants c) to make sure dominant factors were always produced