1. Organisms that cannot make their own food and must obtain energy from external sources are called (a) Autotrophs
(b)Heterotrophs
(c) Thylakoids
(d)Plants

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of

The combining form leuk/o means red true or false