Which of these is purposefully changed during a scientific investigation? (4 points) a
Test variable (independent variable)

b
Outcome variable (dependent variable)

c
Control group

d
Hypothesis

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled