Is this statement true or false?All organisms have a closed circulatory system.

A.
True

B.
False

Answers

Answer 1
Answer:

Annelida are segmented warms that developed a straight and complete digestive system, and close circulatory system. The statement is TRUE.

What are annelida characteristics?

Annelida are the segmented warms than has been include terrestrial and the aquatic species. They characterize for the having their bodies segmented into equal parts linearly arranged along the anteroposterior ax.

Their digestive system has the straight, going from the mouse in the anterior region to the anus in the posterior region. It has been located in the center of the coelom, being held by the septums. Digestion has the extracellular. Excretion is done through nephridium.

Annelida have the well-developed closed circulatory system, in which the blood remains and the flows in vessels. The statement Members of phylum annelida have a closed circulatory system and a complete digestive system is TRUE.

You will learn more about annelida at

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Answer 2
Answer: all organisms do have a closed circulatory system 
so A 

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This picture shows the skeleton on an animal. What best describes what the living animal had?A backbone Radial symmetryBilateral symmetry Asymmetry

DNA if it is a sequence of only four letters

Answers

Answer:

Explanation:

The possible letters are A, C, G, and T, representing the four nucleotide bases of a DNA strand — adenine, cytosine, guanine, thymine — covalently linked to a phosphodiester backbon

Please help ill mark brainly thingyWhich of the following is NOT an example of a constructive interference of light?

a)Car headlights shining down the highway at night.

b)Taking a photo of someone with the sun behind them

c)Shining two flashlights in the same direction

D)Stage lights shining on the actors.

Answers

Answer:

d

Explanation:

Which of the following statements about rainforest is a myth?A) If deforested, rainforest can grow back.

B) Rainforest soil is not very rich

C) agribusiness is responsible for most of rainforest deforestation

D) Farmers and South America are often paid to protect the rainforest

Answers

Answer:

D) Farmers and South America are often paid to protect the rainforest

Explanation:

Farmers and South America are not paid to protect the rainforest, on the contrary, they are largely responsible for the degradation of tropical forests.

Tropical forests, such as the Amazon in Brazil, suffer from the constant exploitation of farmers who often degrade the forest to establish monoculture areas or even to obtain wood. This is because these forests have a soil rich in nutrients that is very desirable for agricultural crops. For this reason, farmers decide to deforest large areas to install their crops, damaging the nature and biodiversity of these forests.

Answer:

a

Explanation:

3. Which BEST compares compounds and mixtures? A Compounds and mixtures contain a variety of elements, but the elements in a mixture do not retain their original characteristics when combined.

 B Compounds and mixtures contain a variety of elements, but the elements in a mixture are able to last longer because they are chemically combined.

 C Mixtures can be made up of elements and compounds that lack definite proportions, but a compound is composed of elements that are present in definite proportions.

Answers

Answer:

The statement that BEST compares compounds and mixtures is option C:

Explanation:

"C Mixtures can be made up of elements and compounds that lack definite proportions, but a compound is composed of elements that are present in definite proportions."

Answer:

 A Compounds and mixtures contain a variety of elements, but the elements in a mixture do not retain their original characteristics when combined.

Explanation:

As Compounds consist of two or more atoms that can be broken down into simple elements.

A Mixture contains two or more atoms that can be mixed together. Those atoms are not chemically combined.

What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s?A. –5 m/s^2


B. +5 m/s^2


C. –25 m/s^2


D. +25 m/s^2

Answers

In this question, there are several information's that can be used to determine the right answer.Let us first check all the information's that have been provided in the question.
Initial velocity = 25 m/s
Final velocity = 0 m/s
Initial time = 0 second
Final time = 5 second
Now we can write an equation to determine the acceleration.
Acceleration of the object = (Final velocity - Initial velocity)/ (Final time - Initial time)
                                         = (0 - 25)/ (5 - 0)
                                         = - 25/5
                                         = -5 m/s^2
So we find the acceleration of the object as -5m/s^2. the correct option among the given options in the question is option "A".

the correct answer is -5 m/s^2

hope this helps:)

What type of glands are the gastric glands?A. Endocrine glands release contents into the bloodstream

B. Exocrine glands release contents into the bloodstream

C. Exocrine glands release contents into ducts

D. Endocrine glands release contents into ducts​

Answers

Answer:

B

Explanation:

The secretions of the exocrine gastric glands - composed of the mucous, parietal, and chief cells - make up the gastric juice. The products of the endocrine cells are secreted directly into the bloodstream and are not a part of the gastric juice