What is a possible cause of the decline in amphibians on the planet?

A. pollution

B. predators

C. lack of water

D. loss of land

The universe contains billions of galaxies, each of which contains billions of stars. Suppose you observed a galaxy through a telescope. It has arms that wind outward from its center like a pinwheel. How would you classify the galaxy? a. irregular b.

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

All cells have a nucleus that acts as a command center for the cell true or false

Explain why the north American cactus and African euphoria species have evolved such similar adaptations

Which island has the greatest number of unique mammal species?

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