In an ocean ecosystem, which is necessary to begin a food web

Answers

Answer 1
Answer: you always have to have some sort of marine plant 

Related Questions

Is a crab a vertebrate or invertebrate?
In humans, the placenta is essential to the embryo for(1)nutrition, excretion, and reproduction(2)respiration, nutrition, and excretion(3)movement, reproduction, and nutrition(4)coordination, movement, and growth
The diffusion of water across the cell membrane is called:A. ExocytosisB. OsmosisC. Active TransportD. Endocytosis
Which area of the brain is the slowest to develop?
Which adaptation might be found in the greater yellow-headed vulture, but not in the harpy eagle?a. a acute sense of smell b. a powerful, hooked bill c. close-set eyes to judge distances d. short wingspan for maneuverability

Look at the picture of the microscope. To move the objective lens up and down, I would turn the _________ __________ dial. Which two words complete the sentence?

Answers

To move the object's lens up and down, I would turn the FOCUS ADJUSTMENT dial.

:))

In the chemical process of photosynthesis water is a

Answers

In the chemical process of photosynthesis water is a chemical change


I hope that's help !


Answer:

Water is a Reactant

Explanation:

I already did the quiz.

Which two atoms form an ionic bond?A. Two sodium atoms
B. Two oxygen atoms
C. Sodium and bromine
D. Fluorine and chlorine

Answers

Answer:

Sodium and bromine

Explanation:

Ionic bond is a type of chemical bond and binds the chemical molecules together.  Ionic bond is formed by the transfer of electrons from an electropositive element ( metal) to the electronegative element (non metal).

Sodium is an electropositive element and contains one positive charge. Bromine is an electronegative element with a single negative charge over it. Sodium gives the electron to bromine and results in the formation of ionic bond.

Thus, the correct answer is option (C).

Sodium and bromine would form an ionic bond. The one valence electron from sodium would be transferred to the bromine atom in order to obtain octet for both.

Which tissue is responsible for voluntary and involuntary movements?a. Connective tissue
b. Muscle tissue
c. Epithelial tissue
d. Nervous tissue

Answers

d. Nervous tissue

The nervous tissue is composed of nerve cells or neurons that are responsible for communications thru involuntary and voluntary movements. 

The neuron, a cell that composes the nervous system. For example a brain, an organ composed of thousands of neural fibers and glial cells that performs many important organismic functions. 
Neurons are specialised cells that have dendrites, axons and terminal buttons that sends and receives stimuli from the environment and transduces it into a meaningful information and understand the complexities which the brain now functions. 

It's muscle tissue so the correct answer is B

Which of the following are considered macromolecules? Select all that apply. (2 points) A. Nitrogen
B. Lipids ******
C. Proteins *****
D. Carbon

The ****** are my answers. Can someone please check to see if their right? Thank you.

Answers

I believe the only option should be C. Proteins. Only Carbohydrates, Proteins and Nucleic Acids are categorized as Macromolecules, not Lipids.

When you start to exercise, the body responds in various ways due to internal stimuli. one response is an increase in heart rate. identify a stimulus that would cause an increase in heart rate. a.a decrease in body temperature
b.an increase in oxygen levels in the blood
c.a decrease in the rate of cellular respiration
d.an increase in carbon dioxide levels in the blood?

Answers

Answer: The correct answer is D) An increase in carbon dioxide level in the blood.

During exercise, contraction of muscles take place very quickly as they work harder during exercise. As more oxygen is required to burn calories efficiently, the demand for oxygen supply increases.  

When we start exercising, body temperature increases as the rate of cellular respiration also increases.

An increase in carbon dioxide in the blood causes increase in heart rate as there is more demand of oxygen for efficient contraction of the muscles.

D.an incerase in carbon dioxide levels in the body.