The reason that organisms cannot produce populations of unlimited size is that
A. interactions between organisms are unchanging
B. there is no carrying capacity on Earth
C. species rarely compete with one another
<u>D. the resources of Earth are finite</u>
Answer: the answer is c the independent variable is the presence of the rock tumbler and the student is modeling weathering.
Explanation:
Answer: 1 : 2 : 1
Explanation:
Carbohydrates were originally referred to as 'hydrates of carbon' because they contained hydrogen, oxygen and carbon.
Sugars, starches, cellulose, and gums all belong to the class of carbohydrates.
They are represented by the general formula Cx(H2O)y, where x and y must be whole numbers.
Thus, Carbohydrates contain carbon, hydrogen and oxygen in the ratio 1 : 2 : 1
<span>Baroreceptors are special receptors that detect changes in your blood pressure. Important baroreceptors are found in the aorta and the carotid sinus. If the blood pressure within the aorta or carotid sinus increases, the walls of the arteries stretch and stimulate increased activity within the baroreceptors.</span>
<span>
1. spherical
Answer: </span>d. cocci<span>
A bacteria with spherical shape would be called cocci or coccus if they are in coccus in a group. One of the examples would be Staphylococcus aureus which is one of the normal flora of the skin. The word staphy- describe how their colony shaped which is look like grapes.</span><span>
2. rod-shaped
</span>A bacteria with rod-shape would be called bacilli or bacillus if they are in coccus in a group. One of the examples would be Bacillus anthracis which is a pathogen that could do deadly infection called anthrax. Many other bacteria is not named bacillus but have rod-shape like Escherichia coli, one of normal flora in the human gut<span>
3. purple stain
</span>Answer: gram-positive <span>
4. pink stain
Answer: </span>gram-negative <span>
In gram staining procedure, bacteria can have either purple or pink color. If the bacteria have high amount peptidoglycan in their membrane, they can retain the crystal violet color from the staining procedure. Bacteria with a high amount of peptidoglycan will be called gram-positive bacteria.
If they are not, the alcohol will remove the stain, allow the bacteria to retain</span> safranin or fuchsine pink color. Bacteria with a low amount of peptidoglycan will be called gram-negative bacteria.
