In plants, gymnosperms have cones and angiosperms have flowers. What are both of
these plant structures specialized for?
Ophotosynthesis
food production
water absorption
O sexual reproduction

cell division is not regulated in tumor cells.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.