What is the main characteristic of angiosperm seeds? A. they are cones
B. they have wings
C. they are inside fruit
D. they have food

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

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Isotopes of the same element have differ in their