BIOLOGY HIGH SCHOOL

Planarians have a branched digestive tract with both a mouth and an anus.a. True
b. False

Answers

Answer 1
Answer: False. Planaria have one body opening. Food and wastes enter and exit through this single opening called the pharynx.

Related Questions

Which statement describes all enzymes?a. They control the transport of materialsb. They provide energy for chemical reactionsc. They affect the rate of chemical reactionsd. They absorb oxygen from the environmentPlease explain why.
What is the chemical formula for ethanol?
The process of making changes in the DNA code of a living organism is calleda. selective breeding.c. inbreeding.b. genetic engineering.d. hybridization.
The process of linking monosaccharides to become polysaccharides is called __________, while breaking down polysaccharides, like glycogen, occurs during a process called __________.A: hydrolysis; dehydration synthesis B: dehydration synthesis; hydrolysis C: is crossed off D: hydrolysis; glycolysis
Which best describes how the fossil record supports the theory of evolution?

In order to understand the full scope of a disease, we take its occurrence into account. The __________ of a disease is the number of people in a population who develop a disease at a specified time.

Answers

Answer:

POINT PREVALENCE.

Explanation:

This accounts for the number of a population that develops a disease in a particular or specific time.

From your knowledge about the distribution of electrons in their shells and from the atomic number (in parentheses), indicate the most likely charge on the ion when this atom forms an ion. (Remember the 2-8-18 shell distribution.) Hydrogen (1)

Answers

The right answer is C. +1 (for hydrogen).

The hydrogen atom can lose its single electron to give the H + ion, commonly referred to as the proton name. In fact, the atom which has lost its only electron is reduced to its nucleus, and in the case of the most abundant isotope 1H, this nucleus consists only of a proton. This name is not strictly correct if one takes into account the presence, although discrete (less than 0.02%), of the other isotopes. The name hydron is more general (we also say hydrogen ion, despite the possible confusion with the H- anion).

Answer:

C. +1 (for hydrogen).

The purpose is to test whether the surface texture of the ground affects the distance an object can roll. (science)

Answers

Answer:

the purpose of testing whether the surface texture of the ground affects the distance an object can roll is to understand how different ground textures impact the movement of objects. By conducting this experiment, we can determine whether objects roll farther or shorter distances depending on the surface they roll on.

Explanation:

What process adds oxygen to the atmosphere

Answers

The trees and plants add oxygen to our air. Photosynthesis 
Photosynthesis adds oxygen to atmosphere.

Image courtesy of NASAOn the map above, what landform is located at oval C?
A. the Sahel
B. the Sahara Desert
C. the Nile River Valley
D. the Atlas Mountains
Please select the best answer from the choices provided
A
B
D
Save and Exit
Next
Mark this and return

Answers

Answer:

Pretty sure it's C : The Nile River Valley.

Explanation:

At Oval C, there's a river shown in the shape of the Nile River so I'm 99% sure it's the Nile River Valley.

Answer:

b i just took this and this is the answers they give u please mark brainly

Explanation:

Usually flowers contain more stamens than pistil . Why?

Answers

because the stamen is more important 
Other Questions
Comparison mitosis meiosis purpose ? ? number of parent cells ? ?
A particular hormone travels by many types of cells in the body. Which mechanism ensures that it acts only on the target cells?
What is the name of the drug that used to put animals to sleep?
The cladogram below was created to show the evolutionary relationships between different vertebrates.Which of the following inferences can be made, based on this information?a. Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds.b. Birds and sharks do not share a common evolutionary ancestor.c. Having a bony skeleton did not provide an evolutionary advantage to sharks or ray-finned fish.d. Rabbits and primates diverged more recently than crocodiles and birds.