Decomposers are necessary in a food chain

because they

(1) manufacture food by photosynthesis

(2) return nutrients to the ecosystem

(3) absorb energy from the Sun

(4) produce organic nutrients

Jessie was conditioned to blink using an air puff and a tone. the experimenter then presented only the tone until the blink response disappeared. when jessie returns to the lab the next day she blinks when she hears the tone.

Which properties describe pedocal, a type of soil common in the western United States? A. dry, light gray-brown in color, and abundant in calcite B. damp, reddish-brown in color, and rich in clay C. wet, orange or red in color, and poor in calcite

Why is hypothermia used in an open heart surgery? A. to prevent organ rejection from the patient's immune system B. to artificially oxygenate blood by bypassing it through the lungs C.

How does this reproductive structure increase the plant's chances of successful reproduction? The bird will pollinate the plant as it feeds on the berries. The seeds fall to the ground or pass through the bird's feces.

You carry out somatic-cell nuclear transfer, using an egg and a skin cell. in this scenario, the offspring produced will be

A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society? 1.

Digestion includes breaking substances into their simpler building blocks, synthesizing more complex cellular structures from simpler substances, and using nutrients and oxygen to produce ATP. True/False

He urine-producing functional unit within the kidney is called the:

Which phase is the the phase where Chromosomes disperse and are no longer visible. prophase metaphase anaphase telophase

True or false Weeds are specific variety of plants that strip nutrients from the soil