PLS I HAVE 5 MINS ILL GIVE BRAINLIEST

Answer:

(HCO3-) bicarbonate

Explanation:

Answer:

is a chemical bond between two non-metal atoms. Like Hydrogen, Oxygen, Carbon are just few.

There is a covalent bond between the oxygen and each hydrogen in a water molecule (H 2 O). Each of the covalent bonds contains two electrons, one from a hydrogen atom and one from the oxygen atom.

Explanation:

Water or Co2 is a covalent bond that be either polar which has a negative charge and positive charge like water that has one negative oxygen and two positive hydrogen. and non polar like Carbon bonding with carbon is both positive.

Answer:It means  in 5 sentences write about typhoon Yolanda

Explanation:

Answer:

Amoeba is unicellular and is very primitive compared to planaria.

Planaria is advance and evolurionary, stands at a higher level being included in flatworms.

Answer:

A.

Explanation:

Diffusion does not require energy. It's depends on the concentration gradient of the two molecules.

Diffusion is such an efficient process for all cells because it does not require energy. Thus, the correct option is A.

Diffusion may be defined as the migration of substances from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.

Diffusion does not require any type of energy for the movement of ions, molecules, or substances. It is a very feasible form of migration of substances.

Diffusion is a type of passive transport and hence takes place in a dropping manner without any expenditure of energy.

Therefore, Diffusion is such an efficient process for all cells because it does not require energy. Thus, the correct option is A.

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Answer: FALSE is my best guess on this one.

if it's wrong I'm sorry i dinin't help you on this and have a great day

Answer:

In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.

Explanation:

Answer:are you asking a question?

Explanation:

Answer: means that oxyhaemoglobin thus formed can break down at tissues to relaese haemoglobin and oxygen back

Explanation:gooooooooooooooooooooooogle

Answer:

Grass

Explanation:

since producer is the first thing in the food chain its grass

Answer:

It is grass Duh!

༼ つ ◕_◕ ༽つ

Answer:

7

Explanation:

"Seven natural body openings or orifices providing access to an internal cavity through a natural passage called a canal, duct or meatus."

Answer:

c. Waste

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Explanation:

Hatdog

Answer:

False

Explanation:

It will only be 78% in 2040

Answer:

False.

Explanation:

63% of our energy comes from fossil fuels.

Answer:

Random chance mutations led to the webbed feet trait in ancestral land birds, conferring them an adaptive advantage. Birds that inherited the beneficial random mutations associated with the webbed feet trait had more chances to survive and reproduce, passing this trait to the next generations.

Explanation:

Mutations are ramdom changes in the nucleotide sequence of the genome of a particular organism. In general, mutations are deleterious, but mutations may occasionally be beneficial in certain environments. A beneficial mutation must be associated with one or more phenotypic traits capable of conferring an adaptive advantage in a certain environment, thereby the individuals carrying the mutation have more chances to reproduce and survive. In this case, one or more beneficial mutations associated with the webbed feet trait passed to the next generations, increasing their frequency in the population.

Answer:

scavengers

Explanation:

these are the animals that feed on carrion, dead plants,or refuse.

Answer:

yes

Explanation:

Answer:

1. --> d. Species diversity

2. --> a. Genetic diversity

3. --> a. Controlling pests, b. Providing medically useful chemicals , and c. Keeping topsoil fertile

Explanation:

1) Kinds of biodiversity

Species richness is the number of species present in a sample, within a community, habitat or microhabitat, ecosystem, landscape, region, or any well-defined spatial unit. It is simple and easy to interpret. It is the simplest and straightforward measure of biodiversity. It is just a count of species, with no need for abundance data. In some cases, this can be the cause of criticism, as it ignores information about the species-abundance distribution.  

2) Ecosystem services

When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear fresh-water, fertile soils, geotic materials, raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.  

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.  

Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, to learn, provides a spiritual/religious space, is a source of inspiration, it is considered to be cultural patrimony, and the source of scientific knowledge.

Answer:

If our cells don't undergo the cell cycle, our body will run out of cells and we'll maybe suffer from diseases and the cells in our body isn't able to fight the disease and we might die. Our body is made up of good cells which protects our health.

Answer:

1.  pollen grains

2. stigma

3. style

4. egg cell of an ovule

Answer: Scientists say that energy can neither be created nor destroyed, so therefore it is impossible for there to be an energy crisis.

Explanation:

I'm pretty sure I'm right

Answer:

There is a problem because if energy is created as machines worked everything would speed up until it breaks, and if energy was destroyed as machines worked everything would eventually slow down and stop. So in both cases the world would end, a whimper in one a bang in the other.

Explanation:

Reference: How things Work Now(book)

Answer:

because the cell is the smaller unit that has the properties of life

Explanation:

There are three basic principles/statements that are the basis of the unified cell theory, which was proposed by Matthias Schleiden and Theodor Schwann in 1838. All living organisms are composed of cells (first principle), whereby cells can be considered as the basic, structural and organizational units of all organisms (second principle). Moreover, new cells always arise from existing cells (third principle). In consequence, the cell is the smaller unit that has the properties of life in order to carry out all metabolic processes including reproduction, growth, development, etc.

Answer:

Recessive

Explanation:

When there is a skipped generation, the trait must be RECESSIVE. For dominant trait, having 1 dominant allele will give you affected phenotype. It can never give a skipped generation.

Answer:

answer will be c I think

Answer:

True

Explanation:

Humans have a life span of 60 - 80 years while trees have a life span 1000 - 2000 years, also rats , camels , mosquito, earthworm have a limited lifespan.

There is a supply of undeveloped eggs in the ovaries. At the beginning of the menstrual cycle, between 6 and 12 undeveloped eggs in the ovaries start to mature. A layer of cells grows around them. At around day 5 of the menstrual cycle, the biggest follicle will continue to grow for another week. At around day 14, the follicle breaks apart, and the wall of the ovary ruptures. The egg is released from the ovary into the fallopian tube, where it can get fertilized. This process is called ovulation. The uterus also changes during the course of the menstrual cycle. It has a lining of cells on the inside, kind of like a cushion with a lot of blood vessels. Fallopian tubes connect the ovaries and the uterus. The uterine cycle begins with menstruation. This is the process through which most of the lining and blood from the last uterine cycle are cleared out of the uterus to prepare for a new attempt at pregnancy. Starting at around day 5, the lining starts to grow. It builds back up to prepare a place for the egg to grow if it gets fertilized. After ovulation, the egg reaches the oviduct. If sperm cells have entered the vagina during intercourse, fertilization may occur at any time in the next two weeks. Then the fertilized egg will move into the uterus and implant itself into the lining, where development will begin.

Please mark BRAINLIEST!

The events in the menstrual cycle are primarily triggered by hormonal signals from the body. The menstrual cycle is a complex process regulated by the interplay of hormones produced by the hypothalamus, pituitary gland, and ovaries.

1. Hypothalamus: The hypothalamus, a region of the brain, releases gonadotropin-releasing hormone (GnRH) in a pulsatile manner. GnRH stimulates the pituitary gland.

2. Pituitary gland: In response to GnRH, the pituitary gland secretes two important hormones: follicle-stimulating hormone (FSH) and luteinizing hormone (LH).

3. Follicular phase: At the beginning of the menstrual cycle, FSH stimulates the growth and maturation of ovarian follicles, which contain the developing eggs (oocytes).

As the follicles grow, they produce estrogen, a hormone that helps prepare the uterus for a possible pregnancy.

4. Ovulation: As the estrogen levels rise, it triggers a surge in LH production by the pituitary gland. The LH surge leads to the release of a mature egg from the ovary, a process called ovulation.

5. Luteal phase: After ovulation, the ruptured follicle in the ovary transforms into a structure called the corpus luteum. The corpus luteum produces progesterone, which prepares the uterus for potential implantation of a fertilized egg.

6. Menstruation: If pregnancy does not occur, the levels of estrogen and progesterone decline. This drop in hormone levels triggers the shedding of the uterine lining, resulting in menstrual bleeding.

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Answer:

Lysine is one of nine essential amino acids in humans required for growth and tissue repair, Lysine is supplied by many foods, especially red meats, fish, and dairy products. Lysine seems to be active against herpes simplex viruses and present in many forms of diet supplements.

Explanation:

Answer:

They are passed along to offspring

Explanation:

HOPE IT HELPS YOU

Answer:

Que todas tienen núcleo y orgánulos variados

Explanation:

Si no poseyeran orgánulos de diversos tipos  ni núcleo, estaríamos hablando de células procariotas