Asexual reproduction of freshwater and some marine sponges that involves the formation of resistant capsules containing masses of amoeboid cells called

The answer is gemmules.

Explanation:

When the parent freshwater sponge dies in the winter, it releases gemmules, which can survive both freezing and drying. When favorable conditions return in the spring, amoe-boid cells stream out of a tiny opening, called the micropyle, and organize into a sponge.

answer: electrons

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.