If birds secrete estrogen to attract a mate, then what do birds secrete to attract a mate? Answer choices: - Energy. - Energy - fur and fat - seeds - oxygen - pollen - Estrogen - acetic acid
Estrogen

(Question)
If most plants continue to use light energy throughout their lives, then what do most plants continue to use throughout their lives? Answer choices: - Light energy - money - wealth - sunlight - The Sun - food and shelter - energy - Mechanical energy
(Answer)
Light energy

Ques: If computers use electricity as an energy source, then what uses electricity as an energy source? Answer choices: - plants - athletes - satellites - consumers - cells - computers - insects - people
Ans: computers

(Q).
If all biological membranes have lipids as the main consituent which consist of fatty acids, then what is the major thing that biological membranes consist of? Answer choices: - chemicals - glucose - lipids - Energy - complex - oxygen - matter - an ion
(A).
lipids

Ques:If agraduated cylinder can be used to measure volume of water, then what can be used to measure the volume of water? Answer choices: - Spring Loaded Cylinder - Tape Measure - watershred - Earth orbiting the Sun - an electron lens - a graduated cylinder - an electron microscope - Ruler

Ans:a graduated cylinder

If roundworms contribute to soils, then what contributes to soils? Answer choices: - roundworms - humans - rainfall - cacti - bacteria - weathering - viruses - Most plants
roundworms