Which of the following is/are true about energy? (Select all that apply) energy is only found in fuels
energy cannot be recycled
energy is never destroyed
energy changes form

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?