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Sedaia [141]
2 years ago
11

The structure which eats breathes and excretes wastes for the developing baby throughout gestation

Biology
1 answer:
Veseljchak [2.6K]2 years ago
4 0
<span>The placenta is the organ which supplies an infant with oxygen, nutrients, and waste excretion throughout its gestation period; this is accomplished via the umbilical cord, which serves as a conduit between the infant, at its navel, and the placenta itself, which is attached to the mother's uterine wall.</span>
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How many variations do you observe?
masya89 [10]

Answer:

Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). Variation may be shown in physical appearance, metabolism, fertility, mode of reproduction, behaviour, learning and mental ability, and other obvious or measurable characters.

chromosomes or by differences in the genes carried by the chromosomes. Eye colour, body form, and disease resistance are genotypic variations. Individuals with multiple sets of chromosomes are called polyploid; many common plants have two or more times the normal number of chromosomes, and new species may arise by this type of variation. A variation cannot be identified as genotypic by observation of the organism; breeding experiments must be performed under controlled environmental conditions to determine whether or not the alteration is inheritable.

Genotypic variations are caused by differences in number or structure of Environmentally caused variations may result from one factor or the combined effects of several factors, such as climate, food supply, and actions of other organisms. Phenotypic variations also include stages in an organism’s life cycle and seasonal variations in an individual. These variations do not involve any hereditary alteration and in general are not transmitted to future generations; consequently, they are not significant in the process of evolution.

Explanation:

Brainliest please?

8 0
3 years ago
Predator and prey difference
Vera_Pavlovna [14]
The predator is the one putting the other in danger and the prey is the one IN danger
5 0
3 years ago
Bart believes that mice exposed to radiowaves will become extra strong (maybe he's been reading too much Radioactive Man). He de
solniwko [45]

1) Mice not radio waved.

2) Radio

3) Strength of mice

4) Maybe inconclusive.

5) Improves strength

Explanation:

  1. Control Group - Mice not radio waved.
  2. Independent Variable - radio.
  3. Dependent Variable - Strength of mice.
  4. What should Bart's conclusion be? Maybe inconclusive.
  5. How could Bart's experiment be improved? Improves strength

Experimental setup

setup that is testing a hypothesis using a variable. In most cases only one variable should be tested at a time.

Control Setup

setup that is identical to the experimental setup, only it does not contain a variable.

Independent Variable

The one factor that is change by the person doing the experiment

Dependent Variable

The factor which is measured in the experiment

Constant

all the factor that stay the same in an experiment.

4 0
2 years ago
State TWO ways in which the angiosperms are better adapted to a terrestrial life than the bryophytes.​
tester [92]

Answer:

All vascular plants have water-conducting tissue and are better adapted for life on land than the bryophytes; they are also characterized by a dominant sporophyte generation.

7 0
2 years ago
How are hormones produced by endocrine glands typically transported to target cells?
ankoles [38]

Hormone Signaling. The glands of the endocrine system secrete hormones directly into the extracellular environment. The hormones then diffuse to the bloodstream via capillaries and are transported to the target cells through the circulatory system.

3 0
3 years ago
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