what do All food chains,food webs, and energy pyramids start with ?

Answer:

Iron (Fe)

Explanation:

Answer:

Light energy is harnessed in Photosystems I and II, both of which are present in the thylakoid membranes of chloroplasts. In light-independent reactions (the Calvin cycle), carbohydrate molecules are assembled from carbon dioxide using the chemical energy harvested during the light-dependent reactions.

Explanation:

Answer:

they help create new cells

Answer:

i would say  a

im sorry if im wrong also i dont need brainliest

Answer:

All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool.

Answer:

You will be fine I hope. :) It just says you have been eating green foods.

Explanation:

Answer:

At the North Pole, the sun is above the horizon for six straight months (March through September), spinning around in horizontal circles, reaching a maximum height of 23.5° above the horizon at the June solstice. As you travel southward in the northern hemisphere, the noon sun gets higher and higher.

Explanation:

Add the north pole the sun is above the horizontal for six straight months

Answer:

Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients. Mitochondria are also responsible for generating clusters of iron and sulfur, which are important cofactors of many enzymes

Explanation:

Answer:

Darker colors absorb heat so the darker fur color on the extremities would help in keeping the rabbits warm.

Answer:

a) Humans depend upon other organisms for food and oxygen

Explanation:

Biodiversity refers to the richness in the species of organisms on Earth i.e the variety of biological organisms on the Earth. The importance of biodiversity cannot be overemphasized because of our dependence on the sustainability of biodiversity in our ecosystems.

The loss of biodiversity, which is becoming rampant by the day, is a major concern to us because we humans depend upon other organisms for food and oxygen. Humans are strictly heterotrophic and hence are reliant on variety of organisms for food. Plants also release oxygen gas via their photosynthetic process, which is key to our survival as a population.

The study of the environment is called ecology.

The correct answer is A.

The loss of animals and plants in the ecosystem is called loss of biodiversity. These reasons for the loss is as follows:-

The loss of these species has a high impact on the ecosystem as these have an important function to form forests.

All the species are dependent on each other.

Hence, the correct option is A that is humans depend upon other organisms for food and oxygen

For more information, refer to the link:-

https://brainly.com/question/12985618

Answer:

Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.

Explanation:

Answer: C) The continents were once United into a single supercontinent named Pangea, which broke apart and the continents gradually moved their current positions. (USATestprep)

Explanation:

The “Explanation” is all in the answer, really. :)))

1) e 1

2) c 2

3) b 3

4) d 4

5) a 5

Answer:

1) e 1

2) c 2

3) b 3

4) d 4

5) a 5

Explanation:

Answer:

62.3018 g

Explanation:

I also had this question on my quiz

Answer:

it would be A helium I think

Explanation:

Answer: B) CAU

Explanation:

I just did the test ;)

Answer:

1.Both can change in light of new evidence

2.Both explain how a phenomenon works

Explanation:

Law and theory can be defined to be part of the nature of scientific knowledge. A scientific theory is a well-established explanation for observations of the natural world which can be verified by applying the scientific method, while a scientific law is a statement obtained from repeated experimental and/or observational procedures to describe and/or predict natural phenomena. Scientific theories can change when researchers discover new lines of evidence, while scientific laws also change based on new empirical evidence.

Answer:

Explanation:

Elements undergo chemical bonding-where electrons are shared, and rearranged to form various molecules and compounds. Bond formation in chemical reactions have specific requirements for molecular configurations and energy.

Molecules usually collide at random til conditions are favorable for bonding.  Chemical change or reactions occur at faster rates at higher temperatures. Heating molecules increases their collision frequency and makes it more possible for the correct molecular orientation (for breaking and forming bonds) and energy to react are present.

Answer: Many drugs can affect muscular control and skeletal strength. Steroid use during childhood or adolescence, resulting in artificially high sex hormone levels, can signal the bones to stop growing earlier than they normally would, leading to short stature. PCP can cause a user to have severe muscle contractions.

Explanation:

Answer: They are not regulated by contact inhibition.

Explanation:

Contact inhibition is a form of controlling cells. Cancer doesn't have contact inhibition, which is one of the reasons why it spirals out of place so easily.

Answer:

They are Not regulated by contact inhibition.

Explanation:

The other 3 options are not characteristics of a cancer cell. Cancer cells have unlimited cell division, no anchorage dependent inhibition, no contact inhibition, and forms tumors - hence they don't form a single layer of cells.

Explanation:

HONEY BEE QUEEN'S ROLE IN THE COLONY

The Queen Bee plays a vital role in the hive because she is the only female with fully developed ovaries. The queen's two primary purposes are to produce chemical scents that help regulate the unity of the colony and to lay lots of eggs.

Answer:

the function of queen bee are

1. to lay's egg

2. queen fed with royal jelly

Explanation:

Answer:

A spade placed in the fire turns hot.

Explanation:

the temperature of mercury is not regulated and the atmosphere easily floats away while being replaced with solar wind .

Mercury has a thin atmosphere.

Answer:

Characteristics used to classify stars include color, temperature, size, composition, and brightness.

Answer:

deletion!

Explanation:

edge 2020

Deletion mutation is an example of frame-shift mutation.

Frame-shift mutation is a type of mutation in which the reading frame of a DNA (nucleotide) sequence is altered.

DNA or RNA is made up of nucleotides subunits, which is read in a particular pattern. When this reading pattern is shifted, frame-shift mutation is said to occur.

Deletion mutation and insertion mutation are the two kinds of mutation that results into frame-shift mutation.

Learn more about frame-shift mutation at: https://brainly.com/question/347745

Answer:

Upon tissue injury, damaged cells release inflammatory chemical signals that evoke local vasodilation, the widening of the blood vessels. Increased blood flow results in apparent redness and heat. In response to injury, mast cells present in tissue degranulate, releasing the potent vasodilator histamine.

Explanation:

Answer:

The correct answer is B make cells produce a functional CFTR protein.

Explanation:

Cystic fibrosis is a disease that is caused due to the mutation in the transmembrane protein known as cystic fibrosis trans membrane conductance regulator or CFTR. Cystic fibrosis trans membrane regulator proteins helps in the formation of thin mucus and due to the mutation in CFTR the mucus becomes thick.The disease cystic fibrosis basically affect the respiratory system.

If gene therapy is used to treat cystic fibrosis then it can replace the mutated CFTR gene with a functional one so that the cell containing CFTR gene can produce functional CFTR protein.

Answer:

A. gene therapies to fix the CFTR gene

C. inhalers to deliver CFTR to the cells

Answer:

If you place a sprouted onion with the roots down in a glass of water, it will continue to grow on the top with new shoots. You can either cut off the top part and use it in recipes, or plant the whole onion, roots and all, in soil and watch it grow. All types of onions will regrow.

Answer:

IM DEAD BUT ALIVE BUT IM DEAD

Explanation:

Answer:

false

true

false

true

false

true

false

true

false

true

Answer:

The correct option is;

B. Mitochondria

Explanation:

The mitochondria are the organelle of the cell bund to the membrane that are referred to as the cell powerhouse they function in the same manner as the digestive system, such that they take in raw nutrients which are broken down to produce energy containing molecules which makes up the majority of the chemical energy required for the various biochemical reactions of the cell in a way such that the energy they produce are stored in adenosine triphosphate (ATP) molecules.

Answer:

B. Mitochondria

Explanation:

The mitochondria are cellular organelles found in eukaryotic cells. They are structures involved in cellular respiration, which is the process whereby energy in form of ATP is synthesized for use by the cell.

Cellular respiration in eukaryotes occurs in stages including glycolysis, kreb's cycle and oxidative phosphorylation. All these processes combine to breakdown carbohydrates (glucose) into usable energy for the cell. The structures responsible for this process is MITOCHONDRIA.

Answer:

This is controlled by muscles in the iris which will constrict or enlarge the pupil.

Explanation: