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Yakvenalex [24]
2 years ago
15

3. Sponge structural support is provided by spicules and

Biology
1 answer:
Margarita [4]2 years ago
8 0

Carbon is listed twice my dude :)

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If a plant is considered “drought-resistant“ does it require more or less water to perform photosynthesis?
leonid [27]

Answer:

Less water.

Explanation:

If the plant is "drought-resistant" then that should mean less water is required for the plant to perform photosynthesis.

6 0
2 years ago
Why is nonpoint source pollution difficult to control?
bixtya [17]

Answer:

because it comes from the everyday activities of many different people, such as fertilizing a lawn, using a pesticide, or constructing a road or building.

Explanation:

6 0
2 years ago
Elephants are considered K-strategists because they give birth to only one calf at a time and most have five years in between ha
kicyunya [14]

Answer:

Type I curve

Explanation:

The K-strategist are species characterized by relatively stable populations that fluctuate at the carrying capacity of the habitat or niche in which organisms reside. Elephants are considered as K-strategists because they have a low population growth rate and relatively stable populations. There are three different types of survivorship curves. The Type I curve (also referred to as A curve) is characteristic of k-strategist organisms. Humans and elephants exhibit a Type I survivorship curve in which organisms tend to die when they become elderly. These species have a small number of offspring and provide parental care to ensure their survival. In a Type II survivorship curve, species produce many offspring and only some offspring survive (e.g., birds), while in Type III survivorship curve organisms produce many more offspring and most do not survive (i.e., r-strategists such as frogs or insects).

8 0
3 years ago
In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes orange color. The heterozygote i
allochka39001 [22]

Answer:

A) tortoiseshell female; black male

Explanation:

Females have two X chromosomes and males have an X and a Y chromosome.

<u>The possible genotypes and phenotypes are</u>:

  • XᵒXᵒ: black female
  • XᵒY: black male
  • XᴼXᴼ: orange female
  • XᴼY: orange male
  • XᵒXᴼ: tortoiseshell female

<u>Cross of a black female and an orange male</u>

<h3>XᵒXᵒ  x  XᴼY</h3>

The female only produces Xᵒ gametes. The male produces Xᴼ and Y.

The possible offspring therefore is:  XᵒXᴼ (tortoiseshell females) and XᵒY (black males). The answer is A.

5 0
3 years ago
The original source of all genetic variation is _____. the original source of all genetic variation is _____. sexual reproductio
IceJOKER [234]
The answer for the above question is Mutation. 
Mutations are random spontaneous changes that occur suddenly in the DNA. A single mutation can have a large effect, however in may cases evolutionary changes are based on the accumulation of many mutations. The gene flow is any movement of genes from one generation to another and is an important source of mutation 
7 0
3 years ago
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