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3 years ago

What is the relationship between water clarity and urchin survival?

Biology

2 answers:

Irina-Kira [14]3 years ago

3 0

Answer:

Explanation:

Likewise, shallow‐water invertebrates living in the thermally stable subtidal ... We use the common tropical sea urchin Lytechinus variegatus to study how ..... Relationship between culturing temperature and larval survival ...

olchik [2.2K]3 years ago

3 0

Answer:

Sea urchin cannot survive in clear water

Explanation:

The higher the water clarity, the lower/or negligible is the number of urchin found in that particular water body.

It is so because sea urchins prefer to stay in water bodies with proximity to rock pools and mud. Most commonly they are found on coral reefs of kelp forest or sea grass bed. They prefer to stay in habitat which can provide them food such as algae, sea weed, sea grass etc.

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the separate bones of a newborn infants skull grow until they are fused together and connected by___ joints

Alexus [3.1K]

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3 years ago

Scientists have altered the genetic code of some potato plants by inserting genes that make the plants produce an insecticide. W

Lana71 [14]

D. Genetic engineering

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3 years ago

Based on this tree, which statement is correct? A phylogenetic tree of the living organisms. The main branch divides into two br

alexgriva [62]

Answer:

a) Salamanders are a sister group to the group containing lizards, goats, and humans.

Explanation:

A phylogenetic tree is a diagram that represents the evolutive relations between organisms. As you can see in the attached image, the branch that contains salamanders and the group containing lizards, goats and humans, come from the same point as they are in the group 2a and 2b, because of this Salamanders are a sister group to the group containing lizards, goats, and humans.

b) Goats are in the same level as humans because they come from the same point, so they are more close between them than with salamanders.

c) Lizards are more closely related to salamanders than humans, because humans are in an upper branch, then is not true that salamanders are closely related to lizards as to humans.

d) A basal taxon is a lineage that evolved early, so it separates from the tree in an early stage, as it happens to the salamanders that separated early but not humans.

Then the correct answer is a)

Salamanders are a sister group to the group containing lizards, goats, and humans.

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4 years ago

What is the contribution made to the development of the microscope by Anton van Leeuwenhoek?

kotegsom [21]

The is answer is:

1. first to document careful observations of different cell types

4 0

3 years ago

Describe the relationship between DNA, chromosomes, and genes,

damaskus [11]

Explanation:

A chromosome is a structure that is made of a chemical known as deoxyribonucleic acid, or DNA as well as protein. Chromosomes are found in the nucleus of cells. Chromosomes contain many genes.

A gene is a molecular unit of heredity. Each gene codes for a polypeptide, which becomes a protein that performs a function in a living thing. The DNA molecules are very long and in order to fit inside the nucleus of a cell, they are highly coiled and condensed. During sexual reproduction, one haploid set of chromosomes is given to the offspring from each parent, forming a diploid amount of chromosomes in the offspring.

Since chromosomes contain all of our genes, an organism that reproduces sexually gets a combination of genes from both parents. Genes that are expressed produce an organism's phenotype.

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3 years ago