What is the difference between visible satellite imagery and infrared

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system