Explanation

Biodiesel is a form of diesel fuel derived from plants or animals and consisting of long-chain fatty acid esters. 

Explanation

Chemical reactions that take place inside living things are called biochemical reactions. 

An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process.

Explanation

scotograph is an instrument for writing in the dark, or by the blind. 

Explanation

Bees are by far the most effective pollinators because they feed only on flowers.

Flowers attract and reward bees for their pollination service.

Explanation

A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electrons emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

Explanation

A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electrons emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

Explanation

The medulla oblongata is a cone-shaped neuronal mass in the brain located in the brain stem, directly below the pons and anterior to the cerebellum.

Explanation

Virus is an ineffective agent that typically consists of a nucleic acid molecule in a protein coat,

is too small to be seen by light microscopy,

and is able to multiply only within the living cells of a host.

Explanation

Reactors use uranium for nuclear fuel.

The uranium is processed into small ceramic pellets and stacked together into sealed metal tubes called fuel rods.

Explanation

The atmosphere is comprised of layers based on temperature. These layers are the

troposphere

stratosphere

mesosphere 

thermosphere

A further region at about 500 km above the Earth's surface is called the exosphere.