Which activity can occur without the use of
energy?
(1) contraction of muscle tissue
(2) protein synthesis in a cell
(3) active transport of minerals
(4) movement of water across a membrane

Answer:

Effective food supply was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II.

A spring is a natural discharge point of subterranean water at the surface of the ground or directly into the bed of a stream, lake, or sea. Water that emerges at the surface without a perceptible current is called a seep. Wells are holes excavated to bring water and other underground fluids to the surface.

The image shows a cross-section of land scape.

Answer : 900 kg pumpkins

The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell.

D).increasing the pH with in the cell.

Explaination:

Consumers are dissatisfied with the way that large corporate  farms are treating nature's natural resources.

Chromosome DNA Diploid EggGamete Haploid Meiosis Replication Sexual Reproduction Sperm..
This is an organism or cell with two sets of chromosomes.
This is a haploid cell with half the reproductive information from the parent.
This is a cell or organism having half of the diploid chromosome number, symbolized by "n".

when soaked in dilute sodium chloride solution onion gain mass because of the process of osmosis.

 Explanation: Osmosis is a process when there is movement of water from the region of comparatively higher concentration to the region of lower concentration across in a permeable membrane.

Example with explaination :

Answer with explaination:

 An attempt to document and identify all biological species living in some defined area, usually a park, reserve, or research area. The numbers of species on earth is rapidly diminishing, knowing what species are around will give us an idea of what we're losing, how our actions are affecting the environment.

Answer: Tornadoes form when warm, humid air collides with cold, dry air. The denser cold air is pushed over the warm air, usually producing thunderstorms.

the tiles to the correct boxes to complete the pairs.
Match the arteries and veins to their functions...