The closest algal relatives of land plants are

Correct Answer: a surface exposed by a retreating glacier

Explanation:

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.

Correct Answer: Reactivity

Explanation:

The ability of two or more substances to combine to form other substances is called Reactivity.

Correct Answer: The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases Earth's atmosphere is composed of many gases Their percentages by volume is given by:: 78% Nitrogen, 21% Oxygen, 09% Argon, and 003% Carbon dioxide And very small percentages of other elements

Correct Answer: All the above

Explanation:

Global warming is the increase in the earth?s average temperature due to release of several greenhouse gases to the atmosphere by humans. Global warming is affecting many parts of the world.

 

Natural Causes include :

1. Solar Activity

2. Melting Permafrost

3. Forest Fires 

 

Human made causes include :

1. Deforestation

2. Overpopulation

3. Landfills

4. Mining

5. Fertilizer Use

Correct Answer: Long bones

Explanation:

The phalanges or a phalanx are/is digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.

Correct Answer: Phospholipids

Explanation:

Cell membranes are made up of phospholipids which prevents them from dissolving in water.

Correct Answer: 120/80 mmHg

Explanation:

Healthy blood pressure ranges from 120/80 to 90/60.

Correct Answer: unicellular

Explanation:

An organism is a living thing, and there are two broad categories of organisms: those made up of only a single cell, and those made up of multiple cells.

Single-celled organisms means which contains only one cell are called unicellular organisms. 'Uni-' means 'one,' so the name 'unicellular' literally means 'one cell.'

 

Examples of Unicellular or Single celled organisms ::

 

Prokaryotic organisms like Bacteria,...

Some algae like green algae, euglena,...

Correct Answer: 1) If they use the same cutting board/counter to cut raw chicken, and other foods with out sanitizing in between 2) If they have a cold, flu, or pink eye and are handling food, coughing without covering their mouth, then washing their hands 3) If they don't properly wash their vegetables 4) Not storing foods at proper temperatures And so many other reasons for Food handlers can contaminate food

Correct Answer: J. E. Purkinje