1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lozanna [386]
3 years ago
13

1. In the first step in the life cycle of a star, it is called a:

Biology
1 answer:
lbvjy [14]3 years ago
3 0
I’m pretty sure it’s c. protostar
You might be interested in
1. All animals except sponges have , groups of cells that work together to perform a specific function. 2. All animals eat other
ValentinkaMS [17]

Answer:

1. Tissues

2. Heterotrophic

3. Body cavity

4. Eukaryotes

5. Radial symmetry; bilateral symmetry.

Explanation:

1. All animals except sponges have tissues, groups of cells that work together to perform a specific function.

Sponges are sea animals which are found attached to surfaces. They are multicellular and heterotrophic like other animals, but they lack true tissues and organs.

2. All animals eat other organisms in order to gain building materials for the body. This makes them heterotrophic, since they obtain necessary energy and chemical building blocks from the environment.

Heterotrophs are organisms that cannot manufacture their own food, but obtain it from their environment instead.

3. One key adaptation of animals was the evolution of a body cavity, a fluid-filled gap between the outer wall of the body and the outer wall of the digestive system.

A body cavity is a space found inside the body that is filled with fluid and which holds and protects internal organs. There are several cavities found in the human body and they are separated by membranes as well as many other structures.

4. All animals are eukaryotes, organisms with cells that are relatively large, complex, and contain membrane-enclosed organelles such as the nucleus.

5. Cnidarians are the only animal phylum to display radial symmetry, meaning that their bodies can be divided any way through the center point to yield two even halves.All other adult animals display bilateral symmetry, meaning that their bodies can only be sliced lengthwise through the midline to produce two even halves.

7 0
3 years ago
Which of these is a shortcoming of the Clean Water Act? A.) excludes drain pipes B.) excludes lakes, rivers and streams c.) excl
PtichkaEL [24]

Answer: Option C) "excludes agricultural runoff"

Explanation:

The Clean Water Act (CWA) established in 1972 is a federal law made in United States to address the adverse effect of water pollution. The act was aimed to maintain the physical, chemical, and biological integrity of the nation's waters.

A major shortcoming of the Clean Water Act (CWA) is agricultural runoff which is a nonpoint source (NPS) pollution. Large scale agriculture activities have an adverse impact on groundwater and surfacewater as they carry heavy fertilizer, pesticide and  water inputs.

The federal CWA establish water quality standards and total  maximum daily loads (TMDLs) to asses the pollution caused by agricultural water with the help of regulatory mechanisms.

Hence, the correct option C.

6 0
3 years ago
The glucose produced during photosynthesis is an example of a
kari74 [83]
The answer to this question is B
6 0
3 years ago
NEED HELP ASAP!!!! Explain why the fact that invasive species did not co-evolve with the native species unbalances an ecosystem.
rosijanka [135]

Answer: The invasive species unbalance an ecosystem because it takes over an ecosystem and does not let the other native species thrive while it takes over. There are many invasive species around the world even in your own town or state there is a type of fish suppose that is an invasive species to Michigan called a sea lamprey which kills fish native  to the great lakes and is taking over there are also zebra muscles if you need another example

BRAINLIEST PLZ

7 0
3 years ago
Read 2 more answers
BEST ANSWER GETS BRAINLIEST!!!
Fynjy0 [20]

Answer:more decrease in fish

Explanation:because that penguins source of food most of the time

4 0
3 years ago
Read 2 more answers
Other questions:
  • Compare the two pictures above. These show the beginning of mitosis and meiosis. How are they different?
    10·2 answers
  • What cellular components do some bacterial cells have that make them powerful pathogens? explain your answer. 2. why are penicil
    10·1 answer
  • The biggest reservoir of water on Earth is in
    5·2 answers
  • A student is studying cells and uses a school as a model to represent the cell. Which part represents the cafeteria- where food
    5·1 answer
  • Explain the difference between the calorie (lowercase C) and the Calorie (Capital C)?
    10·1 answer
  • Obsidians glassy texture indicates that it formed
    14·1 answer
  • Bioaccumulation refers to ______? A.Becoming extinct soon B.Human activities that threaten wild species C.Identify and protect e
    6·1 answer
  • Tiffany wants to know the effect of eating sugary snacks on
    15·1 answer
  • Distinguish the characteristics that define each of the five kingdoms. If you discover a new species what characteristics does t
    11·1 answer
  • I need your guys's help!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!