Where the weight of substance is maximum? (a) top of a hill. (b) center of the earth’ (c) Surface of the earth (d) Inside the earth Urgent. Please do it quickly.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.